Ampere APK

Version v3.38 - com.gombosdev.ampere
Last updated: Tue, 19 Jan 2021 13:32:19 UTC
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Ampere apk

APP Information

Download Version v3.38 (244)
Apk Size8.56 MB
App DeveloperBraintrapp
Malware CheckTRUSTED
Install on Android4.1.x and up
App Packagecom.gombosdev.ampere.apk

Download Ampere v3.38 APK

App Description

Ampere is gombosdev,ampere,tools, content rating is Everyone (PEGI-3). This app is rated 4.38 by 108 users who are using this app. To know more about the company/developer, visit Braintrapp website who developed it. com.gombosdev.ampere.apk apps can be downloaded and installed on Android 4.1.x and higher Android devices. The Latest Version of v3.38 Available for download. Download the app using your favorite browser and click Install to install the application. Please note that we provide both basic and pure APK files and faster download speeds than APK Mirror. This app APK has been downloaded 201601+ times on store. You can also download com.gombosdev.ampere APK and run it with the popular Android Emulators.

Did you ever felt, that one ChargerUSB cable set charges your device really fast and the other not? Now, you can prove this with Ampere.

Measure the charging and discharging current of your battery. 

PRO features:
- Widgets
- Notification
- Alerts on device 
- Alerts on Android Wear

Not every device is supported because there are devices which lacks an appropriate measurement chip (or the interface) and they can not be supported at all. Please read the list of not supported phones at the end of the description.

The app is not meant to be mA accurate. It is only good for evaluate which ChargerUSB cable combo is working the best for you on the same device.


Please read also the FAQ: http:goo.glR8XgXX 


Start the app and wait ca. 10 seconds ("measuring" is on the display). After this time, the charging or discharging current will be shown.

The current depends on many things:
- Charger (USBACWireless)
- USB cable
- Phone type
- Current tasks running
- Display brightness
- WiFi state
- GPS state

Please don't use the readings on this app as concrete science. However, the readings are good enough to relatively measure how various chargers and USB cables fair on the same device.

If the app shows 0mA all the time, please use the settings option "Old measurement method". You can force the app with it to use the old measurement interface, if the Lollipop device has at least one.

Unfortunately some Samsung devices don't give correct (measured) values (e.g.: S5), just the maximum possible charging current with the actual USB cablecharger configuration. This is a firmware problem.


Background info: The app measures the chargingdischarging current of the battery. If your phone is not connected to a charger, you see the discharging current which is negative. If you connect a charger then the current what the charger gives will be used to supply your phone and the remaining power will be charged into the battery.

If your phone consumes 300 mA without a charger connected (-300mA on the display), then a 500 mA charger will charge your battery maximum with 200 mA current (200mA on display).


Technical info: The displayed current is an average value from 50 measurements minus the 10 upper values and the 10 lower values. The displayed current can be shaky or unstable or even zero which means, that the Android system provides unstable values. Every company uses different battery types and other hardware making it difficult to get accurate results about your charger.


LiPo batteries don't draw the maximum for the full time it takes to charge the phone. If your battery is charged almost full then the charging current will be much less as by lower battery levels.

- A graph explaining LiPo charge stages: http:batteryuniversity.com_imgcontention1.jpg
- Dave's (EEVBlog) LiPo Charging Tutorial: http:youtu.beA6mKd5_-abk


PhonesROMS compatible only with "Old measurement method" switched on and selected the right "Measurement interface":
➤ HTC One M7  M8
➤ LG G3

PhonesROMS reported to be not working with this app:
➤ Galaxy Grand Prime - fortuna3gdtv
➤ Galaxy Note2 - t03g, t03gchn, t03gchnduos, t03gcmcc, t03gctc, t03gcuduos
➤ Galaxy S3 - d2att, d2spr, d2vmu
➤ Galaxy Tab4 7.0 - degas3g
➤ HTC Desire 510 - htc_a11ul8x26
➤ HTC One S (ville), X (endeavoru), XL (evita)
➤ HTC Sensation 4G - pyramid

Please do not give wrong rating, if your phone is one of the above. Not the app is wrong, but your phone does not support this kind of measurement yet.

If the app doesn't work on your device with pre-Lollipop Android version, then please read the first and the second posts in this XDA developer forum thread: http:goo.glpZqJg8 . Please post your problem with screenshots in the XDA thread.

Please read also the FAQ: http:goo.glR8XgXX 

App ChangeLog

  • v3.37
  • * Android 11 (Android R) release
  • * Bug fixes and minor enhancements
  • Ampere FAQ:
  • For more info please read the change history: Settings => About Ampere => Change history
  • Note: When ampere would stuck in "measuring" state (after a firmware upgrade) please clear Amperes's app cache.
  • 1.) Open the "Android Settings app" => "Apps" => "Ampere"
  • 2.) Clear all data under the "Storage" menu
  • 3.) Restart Ampere

App Screens

Ampere App Screen 1Ampere App Screen 2Ampere App Screen 3Ampere App Screen 4Ampere App Screen 5Ampere App Screen 6Ampere App Screen 7Ampere App Screen 8Ampere App Screen 9Ampere App Screen 10


requires following permissions on your android device.

view network connections
Allows the app to view information about network connections such as which networks exist and are connected.

change network connectivity
Allows the app to change the state of network connectivity.

Allows access to the list of accounts in the Accounts Service.

full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.

run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.

control vibration
Allows the app to control the vibrator.

prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.

In-App billing
In-app Billing on Google Play provides a straightforward, simple interface for sending In-app Billing requests and managing In-app Billing transactions using Google Play.

receive data from Internet
Allows apps to accept cloud to device messages sent by the app's service. Using this service will incur data usage. Malicious apps could cause excess data usage.

Older Versions

More Android Apps to Consider

Google Play Reviews

  1. Lou Fourquet-avatar

    Lou Fourquet


    App doesn't have to ability to turn off service. Nothing in settings. Forced stop, cleared data, and upon reboot notification is back. Guess only way is to uninstall...

  2. Trenton Thomas-avatar

    Trenton Thomas


    definition This app is great if u like to know how ur phone is charging and what charger is the best to use with your device!!

  3. Tapan Kanti Hazra-avatar

    Tapan Kanti Hazra


    meter Initiation of showing result takes very long time. If there is a problem with the phone for this, it should be pointed out. About authenticity of the measurement is not known, but it can be verified if remaining time to complete the charging is given.

  4. ruth kaiser-avatar

    ruth kaiser


    berechnen This app is accurate, informative, and essential to anyone troubleshooting a weak charge. Honestly the first app that I download on every new phone I get. Braintrapp, thank you for Ampere!

  5. Zack Thomas-avatar

    Zack Thomas


    in watt If the app changes, I'll change the rating. Not showing charging current, doesn't show charge rate and Im not sure what that is at the top in miliamps, but it doesn't apply to what my phone is doing. If thats the charging current, its way off according to 2 different ammeters and the phone itself.

  6. Arcee Cola-avatar

    Arcee Cola


    stunden Good information for analyzing charging issues. The app is stable. There is another app that has just a bit more info, but keeps crashing. I like this one enough for now.

  7. Zach Berg-avatar

    Zach Berg


    in ma I LOVE IT i mostly use it to monitor my battery temp because my phone is black and it retains heat and i don't like that but since i have a phone that is made to be water resistant i put it in cold water

  8. John Bogle-avatar

    John Bogle


    nvidia Good app it tells you the battery level of your phone and everything to see if it's good or not 👍👌🙏.

  9. Fares jaghaba-avatar

    Fares jaghaba


    umrechnen Amazing app for measuring the battery current when is charging / discharging / not charging

  10. Nbst ST-avatar

    Nbst ST


    messen Good app. Now I can monitor charger and battery performance.

  11. Shankar Vetal-avatar

    Shankar Vetal


    Not working on my android mobile. Collects lot of personal data and many ads pop ups

  12. sachin kamble-avatar

    sachin kamble


    It helped me to rectify whether the issue is with my charger Or usb cable.. I love this aap

  13. Shabaz Mondal-avatar

    Shabaz Mondal


    Good app to understand the speed of charging with various chargers

  14. Jignesh Patel-avatar

    Jignesh Patel


    Good app to know different input voltage and mA from different sources.

  15. CHESTER Benington-avatar

    CHESTER Benington


    Thanks to PINOY DIY it is the most effective and most efficient app after I installed relatively app like this, thanks to developer also... Nice one👌👌👌

  16. Techwin-avatar



    Perfect app for charger and battery testing.

  17. Gervy Garcia-avatar

    Gervy Garcia


    Currently using oppo reno3 pro with Android 10 and measurement is stuck at 10mA

  18. Avni Buttan-avatar

    Avni Buttan


    It helps you to know better your own battery and seriously it helps

  19. Nathan Martin-avatar

    Nathan Martin


    Its very cool if you want to learn about your phone fast charging is capabilities

  20. Mohamad Asakereh-avatar

    Mohamad Asakereh


    It's simple and easy to use. The only annoying thing for me is the battery capacity which depend on remaining charge changes! The more charge I got in any given moment the more capacity it shows! sometimes even more than the battery's real capacity!

  21. Sujendra Anagonda-avatar

    Sujendra Anagonda


    Thanx for this wonderful application just bcz of this I just saved my money to replace a battery from a showroom , plz guys download this application to check ur power of ur charger ! And change ur data cable or adapter if ur mobile is charging slow , I highly recommend you guys to check this ones and u too rate this application after ur experience using this apk, 💕😉

  22. Deadbeat 2370-avatar

    Deadbeat 2370


    When I first heard of the app I thought it was a joke until I actually ran it and it actually worked

  23. christopher angers-avatar

    christopher angers


    Helpd me figure out I had chargers that weren't good for my phones battery.

  24. Thomas King-avatar

    Thomas King


    Love it. The print is tiny; I wish there was a large print screen or zoomable text. Lots of good info. Simple clear interface. Helpful when you have wireless or wired charging problems.

  25. Aswin Rajan-avatar

    Aswin Rajan


    Does what is expected, with a clean UX. Picked this after trying the other top apps.

  26. Kitty-avatar



    It's work perfectly . I don't know why people say it's count even didn't plugged their phone . When I unplugged my phone it's say " Not Charging " . It's work perfectly 👍 .

  27. Al Bristow-avatar

    Al Bristow


    Excellent app. I can see which charging cable/adapter/charger delivers the most/best current at a glance plus a quick check on battery and other info. No faffing about. One button tap to open it and that's it.

  28. William Brown-avatar

    William Brown


    As far as I can tell this app did exactly what I promised. I found it rather helpful in determining which cords and power blocks to use.

  29. ian cook-avatar

    ian cook


    Works very well. I have the usual collection of chargers and cables. This app let me work out which cables are good for charging.

  30. Derek Horacek-avatar

    Derek Horacek


    Straight up good app 5/5 stars. Does exactly what it says it'll do and then some...

  31. Joy Mukherjee-avatar

    Joy Mukherjee


    Removing 1Star as live notification can only be enabled after purchasing full version of the app. I myself purchased it and I love it. But as a general review a star needs to be taken out as it won't benefit major masses.

  32. Stacy Wright-avatar

    Stacy Wright


    Love it! My only can't change widget color. It's the only one I've seen where there is no control over this, which means it's the only one that bugs me.

  33. Salwa Masdan-avatar

    Salwa Masdan


    Im giving 2 stars not because of the performance, just because i dont know whether it is functioning or not. Because, when i plug @ unplug charger, it shows the same. Meter keep blinking, min n max shows nothing. Please advise.

  34. ty wood-avatar

    ty wood


    This app tells me the exact input of a charger as well as how a cord is acting. I know whether a problem is with the charger or the cord. The app is clean and not confusing.

  35. yeswanth sai teja-avatar

    yeswanth sai teja


    Very useful and accurate....🖤 But one suggestion, it's very much better option if you add estimated time to charge etc.... Thank you...🖤

  36. khurram khan-avatar

    khurram khan


    Best app for checking the charger.

  37. Austin Fitzgrows-avatar

    Austin Fitzgrows


    The metro pcs guy showed me this! Was able to tell my phone wasn't charging properly. He was able to get me a replacement for 15% of my deductible! $15 vs $100 fix and the app was free and downloaded fast. Also resolved my issue!

  38. Lesleigh Brown-avatar

    Lesleigh Brown


    My battery was going dead wouldn't stay charged I messed with it for like 3 hours and it still wouldn't work look at a video and then it's working 100% and it's fully charging thanks a lot for the video

  39. Kevin Barron-avatar

    Kevin Barron


    Simple, basic. I've used this over the years to test failed adapters, ESPECIALLY evaluate cables, compare charge with car running/off, etc.

  40. augustine addo-avatar

    augustine addo


    App is very helpful, helps me know the amperage of various chargers and the chargers to buy suitable for faster charging

  41. Steve Filson-avatar

    Steve Filson


    Really useful app for finding out if a charger is working and its rate of charge.

  42. Phillip Zabriskie-avatar

    Phillip Zabriskie


    The app is a scam! I purchased a real USB multimeter on Amazon and discovered this app is just making up numbers. It's just guessing, and it was way off. Uninstalled and reported.

  43. David Maye-avatar

    David Maye


    It works. Needs more smoothing algorithms and maybe a chart/history.

  44. gigel gigel-avatar

    gigel gigel


    Great app but since they added full screen ads it's harder to navigate in peace.

  45. Jeff Perera-avatar

    Jeff Perera


    Great app to know how well your charger is working and how much your phone or background apps are using.

  46. Aditya Bhelke-avatar

    Aditya Bhelke


    Good app for measuring charge current and compare different chargers and cables.

  47. Cyndi-avatar



    Where are just got it today but for some reason it always says not chargingand I have done everything besides throw the damn phone in the lake this is the third time third phone I've had that 2 times has been the speaker and once I was hacked maybe it just wasn't meant for me to have a damn phone anyway all I do is get calls from people with bad news so I hope and pray this app works 😔😔😔

  48. Lazyboyee World-avatar

    Lazyboyee World


    Very useful app. Helpful when buying secondary charger to check its full potential. Good job Developers

  49. Tryce-avatar



    App was recommended to me by a good friend. So far, so good. Will continue use and, might change rating, depending on performance.

  50. Jeff Ya-avatar

    Jeff Ya


    Great Ap to validate if your cord is worn out and what your rate of charge is.

  51. Megat Ismail-avatar

    Megat Ismail


    Does what it says. Without fuss or annoying ads in your face

  52. Soumya Ashu-avatar

    Soumya Ashu


    These is awesome I got this app in YouTube thank you for sharing 😊.It's really working good ✅

  53. Mitch Musarra-avatar

    Mitch Musarra


    Fantastic! Super easy Super informative! I love it! 😂

  54. Jim Adams-avatar

    Jim Adams


    Could you have the app stop the charging at a user selected level? Otherwise, great app.

  55. tony shaw-avatar

    tony shaw


    Useful app to assess how well a charger is working.

  56. HEROX JOKER-avatar



    Best app that shows battery information accurately thanks for making this app very useful i wish i should give it ten stars ✨

  57. stenis varghese-avatar

    stenis varghese


    Its scamm Its shows only using 3 volts but my chargher 9 volts. And the wattage is also low and the battery mah is also wrong mu battery is 5k mah but it shows 3k mah . Fake app

  58. Eric-avatar



    I loved how I can monitor current flowing in my phone. Such a resourceful app.

  59. Use Only-avatar

    Use Only


    great app.working fine so far.i just bought the pro version and working perfectly.i will update more later if face any problems being a paid user.

  60. NecroEpic GT-avatar

    NecroEpic GT


    Works 10/10 no bugs and no annoying video ads

  61. Gary Jones-avatar

    Gary Jones


    Awesome! Easy to compare chargers and cables. Go to tool.

  62. Orbitalunderground HD Productions-avatar

    Orbitalunderground HD Productions


    Excellent! Very useful tool.

  63. [] GENIUS INVENTOR [] { genius inventor channel }-avatar

    [] GENIUS INVENTOR [] { genius inventor channel }


    Pretty good app!. Very helpful for me thank you.

  64. Jonatan Öström-avatar

    Jonatan Öström


    Could be more beautiful but doesn't exactly what it should.

  65. s Olszewski-avatar

    s Olszewski


    This app really helped me to understand why I could not charge my pixel 3a

  66. Tommy Partridge-avatar

    Tommy Partridge


    Let's me know if I am having a charging problem. Works great!

  67. Dee Vankham-avatar

    Dee Vankham


    Very accurate imo. Quick on the stats update.

  68. Richard Bleiweiss-avatar

    Richard Bleiweiss


    Helpful to know what chargers put out more amps

  69. shivam panday-avatar

    shivam panday


    Nice work but between not work this app issue problem solved

  70. venkat mahesh yempada-avatar

    venkat mahesh yempada


    Nice app shows charging differences of chargers.

  71. Jayagopal K-avatar

    Jayagopal K


    Provides what is expected. Helped to analyse the battery and charger.

  72. Taher Ali-avatar

    Taher Ali


    Giving 3 ★ because it takes too much time to view results.

  73. Mary Lou Fuller-avatar

    Mary Lou Fuller


    It does the job! I have 9 chargers that need replacing. 🤦‍♀️

  74. MD Rabbi Sheikh-avatar

    MD Rabbi Sheikh


    Very good 👍 app for test charging speed

  75. robert coldren-avatar

    robert coldren


    Much better than expected. This app accurately describes how fast your phone is charging from a charger. I typically buy the cheapest charger available and it showed me I'm getting what I paid for. it showed only 50% of the rated charge versus the original charger was 100% of the advertised charge. Highly recommend to anyone who wants to make sure their phone is charging the way they want it to charge

  76. Luis-avatar



    Works great for me and brings really valuable information

  77. Kaden Whiteaker-avatar

    Kaden Whiteaker


    I Like this but please make it to where you can change the color of the widget! With a color wheel so I can make it match my halloween themed wallpaper! Make it to where you can change the text and battery at once with a color wheel, and then the key combined with the main. And then the outside to make it transparent fully or less with a tint like a 0 to 100 percent ratio bar. Please do this and then it will be 5 star!

  78. Saliya Wimalaratne-avatar

    Saliya Wimalaratne


    Does what it says on the box, for free. Can't ask for more than that!

  79. Matthew Rutan-avatar

    Matthew Rutan


    I love this APP, not only because I am the type of person that loves being able to see what actual performance of something that is a part of my daily life, but because there is nothing more aggravating than trying to determine if your cable, 12 volt automobile adapter, or 120 volt charging power supply is defective. With this app you can find out what is the cause of the "poor charging, or slow charging " alert when you plug in your almost powerless cellular device.

  80. Stirling Iverson-avatar

    Stirling Iverson


    Pretty good usability and good features

  81. Ray Grau-avatar

    Ray Grau


    Does exactly what I needed to do. I was a little skeptical cuz I wasn't sure what went involved with all of this and the development of the app. but once I started plugging it in looking at the car chargers looking at the charger at the house everything worked out phenomenally. I immediately purchased the pro version just to get rid of the ad and support the developer. Well done!!!!!!

  82. Loren Blaine-avatar

    Loren Blaine


    Great, did exactly what I wanted. I compared the rate of charge for all my different cords and USB ports. I do keep getting a message that Ampere is running in the background and using battery, but whatever battery drain it causes seems inconsequential to me. The repeated message is just annoying.

  83. Philip Rush-avatar

    Philip Rush


    I absolutely love this app and I highly recommend it. I find it to be accurate in that if I adjust my screen brightness just the slightest bit up or down it is reflected in the app as using more or less milliampers. Money is very tight for me right now or I wouldn't hesitate to buy the pro version of this great app. I hope people will support this fantastic app which unfortunately I can't do at this moment.. Thank you...

  84. Steven Gates-avatar

    Steven Gates


    I needed something to test both my chargers and my cables. This app is perfect for that. Sometimes, when I plug in a charger, my phone shows "charging slowly - please check you charger and cable." Without this app, it would be difficult to figure out which was at fault. With this app I compare charging details - which charger puts out the most Amps and which cable transfers the most Amps. The app can be set to trigger alerts and it also has useful widgets. 😎

  85. Russ Miller-avatar

    Russ Miller


    It is the simple way of keeping your eye on the most important information to keep going wiith the power you need when you nèed it. I used this often when I would purchase a hard to find C cord a few years ago. I would always test the cheap charge cord when bought at 99-cent store or get one mailed from China usually not great conductors of five volt power at about one amp.

  86. suman beniya-avatar

    suman beniya


    Recently my charger was damaged. I was unable to detect whether my power adaptor or the data cable was damaged. This app has me a lot to detect that the type c USB cable was damaged. I can't explain the whole process how this application helped me. You guys can visit YouTube and search for it.

  87. Simon Charlton-avatar

    Simon Charlton


    Best of its type, very handy when modding hardware

  88. john carroll-avatar

    john carroll


    Works like it says and amazes you how little amperage is put out by a lot of different brand chargers. If you wondered why a device is slow to charge it's probably the adapter or the cord. Just because it says 2.4 amp output doesn’t mean that's what you will get. I have ten different brand adapters rated 2.1 or 2.4 amps none of them put out the same amperage. One says 450 milliamps another goes up and down between 70 milliamps and 1.1 amp. So don't blame your phone.

  89. Shaurya PRATAP SINGH-avatar

    Shaurya PRATAP SINGH


    A good tool to measure how effective or fast a charger is for the phone. When comparing two chargers one should remember that the amount of battery power which remained ( eg 15 percent) is equal in both chargers, because with increasing battery capacity,the rate of charging decreases. Also put the phone at minimum brightness and airplane mode.

  90. Kittredge Seely-avatar

    Kittredge Seely


    Ampere is a good app to help users understand the combination of the charger + cable + phone. It should also work with wireless charging which is much more difficult than with wired charging. I will be using this app to monitor charging on any android device that it works on.

  91. McWillies-avatar



    This app is exactly what I was looking for to see the current draw/input on my S8's battery. Also allowed me to monitor voltage and battery temperature, which are both useful. Definitely a good option for those of you who would like to know your battery capacity, discharge rate, charge rate, and temperature.

  92. Robert Owens-avatar

    Robert Owens


    It's a very nice app I like it, it let's me know my present age of battery power and how many volts my charger is putting into my battery, also the capacity of the battery that's in my phone and the build number I'm glad that I found this app good job.

  93. Tanweer Khan-avatar

    Tanweer Khan


    Looking good. I use multiple chargers like from the supplied adapter, Spike buster with usb sockets n from bike Battery as well. App Neatly shows the throughput in all scenarios within 10-15 secs.. Shows charger output voltage, amps as well.. Happy with this app, it helps you understand if the charger ur using is a normal charger, fast charger or a superfast charger (aka quick charge) or a dumb one overheating to charge ur device. A must have SuperStar APP 🤙

  94. Samudra Adilina-avatar

    Samudra Adilina


    It works great now, thanks :)

  95. Mike Galli-avatar

    Mike Galli


    Pure geek app. I can check the quality of chargers and cords if you start with a baseline. ( new charger and 2.1 amp cord) Also looks at the battery health. It can monitor your usage an you can "see" the changes on drain with screen brightness, wifi, volume. Just alot of fun.

  96. Sourabh Choubey-avatar

    Sourabh Choubey


    Very accurate, I tried 4 - 5 apps and also compared, and this is the winner, very helpful, you can check your charger output received by a phone. No one beat this app, this app can give competition to hardware amp meter.

  97. GoldenTitan Gaming-avatar

    GoldenTitan Gaming


    It works, like legit, it works

  98. Jairus Maloba-avatar

    Jairus Maloba


    Very accurate good for assessing chargers or cables

  99. Jodi La Chance-avatar

    Jodi La Chance


    The app installed easily without glitches and has not caused any problems with my phone . I find it very helpful as my charger stopped displaying after a phone update and now I can easily check my phone battery and whether or not it's charging properly with the Ampere app. Thank you! 🙂

  100. Mike G-avatar

    Mike G


    This app does exactly wat it's supposed to... I was able to weed out the faulty cables and wall chargers based on their output. Also being able to see how much battery is being used during different apps being used really helped me figure out what to turn off or disable

  101. Dustin Widmann-avatar

    Dustin Widmann


    I have used this on 3 different phones now and never had any problems with it. Idea: It would be interesting if future versions could do plots of voltage/current/power versus time for the duration of when the phone is plugged in and charging.

  102. Brenton Hancock-avatar

    Brenton Hancock


    Does what it claims and does it well. Find the notifications very handy. Interesting to see how the current changes as the battery becomes charged toward full. Also handy to see which apps suck power. Like it!

  103. Daniel Goh-avatar

    Daniel Goh


    Not really accurate. My power bank can show charging current and voltage. It was changing at 9 volt and 1.8A. But this app just shows around 5 volt and 3.7A. Total output is the same but this apps does not show voltage above 5. So the calculation is incorrect. Please update the apps

  104. Souvik Biswas-avatar

    Souvik Biswas


    This works exactly as described - all the info on battery is displayed. I have a request, can you kindly make available an option to lock the orientation of the app? I'd like to keep it in portrait mode.

  105. Konstantinos Zelianaios-avatar

    Konstantinos Zelianaios


    Extremely useful program, it helps you evaluate chargers and cables. Unbelievable how much the cable can affect the loading rate. With the same charger one cable can charge at 50 mA and another at 700 mA. Εξαιρετικά χρήσιμο πρόγραμμα, σε βοηθά να αξιολογείς φορτιστές και καλώδια. Απίστευτο πόσο μπορεί να επηρεάσει το καλώδιο τον ρυθμό φόρτωσης. Με τον ίδιο φορτιστή ένα καλώδιο μπορεί να φορτίζει με 50 mA και ένα άλλο με 700 mA.

  106. BlackDeath 141-avatar

    BlackDeath 141


    I think this app is very good and I never would have found this if wasn't for Payette Forward for making a YouTube video to how fix my Android phone and checking it's status I would recommend this. 5⭐⭐⭐⭐⭐

  107. Final Fidel-avatar

    Final Fidel


    Great accurate, but V11 Pro after updated to Android 10,it show incorrect 4000mAh(original is 3400mAh) and when charging show UNKNOWN. After factory reset, still the same. Please fix it, thank you.

  108. Nathan Nicholas-avatar

    Nathan Nicholas


    It works ok but not when your using qc3.0 it gives you mah still but not accurate at all. And it should also tell you what voltage is coming in as in 5.2v or 8.9v but it doesn't. So I would recommend this if using normal chargers but not if you use fast chargers.

  109. ---avatar



    This app was great for finding if a charger or cable is good. I cant remove the notification without paying for the pro version even if Im not using the app in the foreground or background. This is invasive and immoral. Will not use this ever again.

  110. Tom Wilkinson-avatar

    Tom Wilkinson


    Really useful for comparing chargers etc. Has alerts for temperature and battery - having alerts for max and min battery levels is really useful if you want to keep your battery within certain limits. It's not greedy on resources and doesn't intrude.

  111. David Boling-avatar

    David Boling


    I like the app and it tells a lot of info, but I wish it had a high vs low speeds charge indicator. Not saying it doesn't provide the information to calculate but it would be nice it have a clear indicator.

  112. John Oliger-avatar

    John Oliger


    Shows the current going into or out of your unit's battery pack in real time. Evaluate different chargers and different phone's high rate charging system as well of how hoggish the cpu and its' chipset really is. A must to evaluate today's hardware.

  113. shailendra ghildiyal-avatar

    shailendra ghildiyal


    A very handy app with simple user interface. Helps in knowing the health of the battery as well as the charger. Thanks

  114. Ritwik Joshi-avatar

    Ritwik Joshi


    I purchased an ads-free version but I still see ads. The 'Charge rate' and 'Max. USB current' values are not generated. But the worst part is total lack of support from the dev. He hasn't responded to emails with bug reports and screenshots for over 6 months. Even reminders don't elicit a response. Don't waste your money on the ads-free version. AccuBattery is a better alternative.

  115. Arvind Sharma-avatar

    Arvind Sharma


    I have slow charging issu but when i download this application there are clearly show the slow speed but i applied my scientist mind and i get success 😄 when speed show 1200-1500 ,check it repeatedly and i got much speed in 2-3 times charger unplugge and in

  116. suraj kumar-avatar

    suraj kumar


    If you have any problem regarding slow charging of your phone due to defect in data cable or adapter, you can easily find out by this app. My request to this app team developer provide how much battery is remaining in terms of mAh.

  117. Roger Eckenrod-avatar

    Roger Eckenrod


    Works as described, nice to see exactly what the charge current is, as well as an indication of the battery health.

  118. Jim Bonner-avatar

    Jim Bonner


    Using this app I've been able to weed out bad charging cords. I'm also able to monitor both charging and discharging of my phone's battery. The widgets are very useful as are the alerts. All in all this is a great app for monitoring your battery without draining it in the process. I highly recommend this app if you have questions about your battery and the charging/discharging thereof.

  119. Nicholas Gold-avatar

    Nicholas Gold


    So far what I have explored of this app is fairly simple and easy to navigate, it is also dumbed down to the lowest possibility without it becoming in effective for many of its users. Great app, would like to see a trial period for the PRO version, as this IS an app that I would buy or subscribe too. If i could experience it forst hand. Not wanting to upgrade to be able to use a feature of this app that I dont know is any good or even if it would me necessary for me. So you loose a star there 2

  120. Manoj Kumar-avatar

    Manoj Kumar


    This is really very good app but now this is not working after i updated my mobile vivo z1 pro please do somthing with this app tha it can run in my mobile again I'm giving two rate but I'll give 5 if you short out my problem and if I'm facing this problem there must be more people those have to remove this app from mobile because of this problem and it will affect your business think about it

  121. Michael Martinson-avatar

    Michael Martinson


    It helps guage power consumption.and draw

  122. Khoo Lupseng-avatar

    Khoo Lupseng


    not accurate for fast charger phone.

  123. Eduardo Ramírez-avatar

    Eduardo Ramírez


    It works flawlessly, and as intended. It's great to find out if you have a faulty charger or cable and to choose the right one. It even helps to find rogue apps that are consuming your battery as it tells you how much power is been used when not charging. When you connect the charger, it even allows to verify if rapid charge is working or how much charge is coming through. And gives you the temperature the battery currently is.

  124. Luca Gentile-avatar

    Luca Gentile


    Great free app! It gives you real time current information with max/min values. It works on Chromebooks too! I have paid for the pro version (just about one euro) so I can see the charging current on the notification bar. Totally worth! suddenly it didn't work, the status was constantly 'measuring', then I reinstalled it and it worked like a charm....

  125. Everything Here Best-avatar

    Everything Here Best


    Wow this is the best app for measuring how fast your charger is. This is 100% accurate. I have used this for OnePlus Nord with 65 Watt Charger it works as expected very great. Salute to the developer for creating such a useful app/tool

  126. Anuj Bakshi-avatar

    Anuj Bakshi


    Use this application often to know the device state, the chargers that I use and optimisation of my cycles. Good if you want to get into the details of your phone charging cycles actively

  127. soeharjo joe-avatar

    soeharjo joe


    Maybe measure for the amps is correct, but i think measurement on voltage definitely wrong. I use original charger with 9v=2A, but the app always detect 4v. I used to charge when battery drop to 10%, it suppose to trigger 9v=2A, but the app just show 4V=2.5A.

  128. Etienne Delisle-avatar

    Etienne Delisle


    Amazing app to test chargers and to see if an app is using up too much battery! Would recommend to anyone needing to know how quick their battery is charging/draining!

  129. Mary Grady-avatar

    Mary Grady


    I tried it, but uninstalled. I'm not sure of the purpose. It shows all batteries as having factory spec power ratings, even one that have higher ratings (and longer run times in use).

  130. Rebecca Loveall Ricard-avatar

    Rebecca Loveall Ricard


    So far, this is the only helpful anything that i have found as i am trying to troubleshoot my lg phone that appears to be charging; yet will not charge more than 2%... At least with this app I can legitimately tell if the usb cord and plug in are working; and see charging/discharging info. Great app! Very glad to have stumbled accross this little gem! Thanks so much!!!

  131. Alan Ehling-avatar

    Alan Ehling


    Easy interface, let's me know which charger and cords work better together, to charge my phone faster. The discharge rate also helps me to find the apps that are causing my phone to lag, heat up and drain the battery at an alarming pace. I would recommend this app to those people who are wondering why their phone charges quickly some times, and slower at otherr times. The only improvement i can think of would be an estimate time remaining till a 100% charged. Thank you!

  132. Mike Good-avatar

    Mike Good


    It did precisely what I needed it to do. I thought my battery was the problem but it was actually my charger that wasn't functioning properly. A great aid for troubleshooting!

  133. Mr. Robert-avatar

    Mr. Robert


    I love this application, it tells me whether my phone is charging or discharging which is what I needed it for also has an amazing amount of information about your battery health in my opinion that actually should cost something for this app but I'm happy that it's free. The reason I got it was I was in a truck that showed that my phone was charging however the phone is actually discharging I did not know it for sure until I install this program.

  134. Michael Dunlap-avatar

    Michael Dunlap


    After going through multiple charging cords and blocks without a clear idea if any were working properly, I decided to see if there could be an app that would allow me to see how many amps my phone was receiving. A quick search suggested Ampere, and after installing it I went through my cords, charging blocks, and if they would not reach 250 mA they went in the trash. My phone actually prefers over 300 mA, but I kept those over 250 mA to power my other electronics. Great App!

  135. Tim Steele-avatar

    Tim Steele


    Accuracy is my issue. The app shows 220 to 190 mAh. The problem is that I don't have my device plugged in. I even cleared data and force stopped it. The fluctuations REALLY concern me because that must be programmed into the app. The only reason to program in fluctuations is if the app is a total fraud. Sure, displaying 200 mAh while not plugged in is bad, but s**t happens. But having that value randomly go up and down indicates the INTENTION to defraud.

  136. Kadeas-avatar



    I rated a 3 when i first downloaded it but now after using it daily i changed it to 5 star. This app is great, i love it! You can check the input charge mA to see if your charger and or wire are functioning up to par. I found a wire and charger combo that charges most eficiantly. Ty for this app. I just wish there were more reasons to buy the pro version because the adds wont bother you at all!

  137. Pippa Wood-avatar

    Pippa Wood


    This app really helps me to charge my Lenovo Tab as I can see at a glance whether it is charging on AC. If it's not charging on AC it sometimes just dies and then I can't get it going again.

  138. cerbius conquer-avatar

    cerbius conquer


    A great concept but difficult to figure out what exactly the numbers are telling you. Should have a chart for comparison to show if your device is charging quickly.

  139. Manu M.M-avatar

    Manu M.M


    This really helped me a lot to help me find out why my phone was charging so slow.,it was the cable actually u should get 800-1500 ma. Bu I got 90-150 ma after I replaced the cable it was fixed thanks one of the best apps 🙂

  140. Neha Kumari-avatar

    Neha Kumari


    This app is awesome. My phone was not getting charged after 78%...I was unable to understand. So, I downloaded this app. First I open this app, then plugged my charger.The Ampere was reading --(470mA). Then I plug out my charger ,and put it again...... After doing 2to3 times the Ampere was --(1900mA)....... So, the benefit of this app is, it help's to analyse your charger what is giving you the output to your phone. I definitely recommend this app...👌👍

  141. Leyton Jay-avatar

    Leyton Jay


    It does what is says. Really great. I want to use it to compare different chargers, cars and solar panels - so I would like to be able to see comparisons perhaps by saving a sample and naming it to create a list which can then be ordered. That would be a useful feature in an already great app. Thanks for making it.

  142. Soul Trap-avatar

    Soul Trap


    The full charge and low charge notifications don't work. notification on that alerts you when it's running. That'll work but that's just annoying 😑😒. Please fix this.

  143. Devesh Rathore-avatar

    Devesh Rathore


    Good app.. Good interface But some key features is missing. Please add charging time. How much time will take to charge battery & a little bit more info about measuring MA. After this i will give you five 🌟.

  144. Daryl John Serfino-avatar

    Daryl John Serfino


    Light and simple app, useful, but it takes about 10 seconds for the app to somewhat calibrate and show the stats --- and some apps show the stats right away ;)

  145. Ahmed Mohammed-avatar

    Ahmed Mohammed


    Best app for mobile charging it gives complete information regarding charging status & information what i like to know, i would give 5 star rating for the features of app. My opinion some what enhances to be made in app like night vision etc.

  146. Ankit Sharma-avatar

    Ankit Sharma


    it doesn't show any measurements in notification panel what's the need of this type of app. It feels that we are not using any app we are using a website which gives us data only when we visit it. LOL...😂😂😂. Never download it.

  147. Shaun Santos-avatar

    Shaun Santos


    Works as expected. Used as basis for charging current. I just wish there is log feature that can record your charging details.

  148. Brevin Koech-avatar

    Brevin Koech


    This app is great, I used to think that my battery had a problem, turns out I had to monitor its performance

  149. Joel Fernandes-avatar

    Joel Fernandes


    Very good and helpful app. Saved me a lot of money on new charger. Only C type cable was charging very slowly.. Thanks to team Ampere.

  150. Kelly McGarghan-avatar

    Kelly McGarghan


    Not sure why, but charging data suddenly dropped from 3 chargers and 2 cables after making temp change in basic settings. Otherwise, it seems handy for verifying your battery and charging information assuming this is just a fluke / bug that I stumbled upon. My A50 still reads fast charging, but current from ports on charger dropped from 2400mA to around 1300 with battery only changing from 62% to 63%. I think for what it offers, it is worth trying out.