Free scientific calculator es plus advanced 991 ex APK

Version -
Last updated: 2020-06-20

Free scientific calculator es plus advanced 991 ex apk

APP Information

Download Version (20200621)
Apk Size23.50 MB
App DeveloperTools for student
Malware CheckTRUSTED
Install on Android4.1.x and up

Download Free scientific calculator es plus advanced 991 ex APK

App Description

Free scientific calculator es plus advanced 991 ex is advanced,scientific,calculator,calc991,plus,education,calces, content rating is Everyone (PEGI-3). This app is rated 5 by 1 users who are using this app. To know more about the company/developer, visit Tools for student website who developed it. apps can be downloaded and installed on Android 4.1.x and higher Android devices. The Latest Version of 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 169+ times on store. You can also download APK and run it with the popular Android Emulators.

Scientific calculator 300 es plus, 991 ex is the calculator for students and engineering student. Calculator 991 es plus provides powerful functions in a real calculator 991 ex 300 ex. It makes advanced calculator 991 ex become the most useful calculator for university and school.

Application includes some calculators inside:
- Basic calculator 300 es plus
- Advanced calculator 115 es plus
- Scientific calculator 991 ex
- Scientific calculator 991 es plus
- Graphing calculator 84 plus

Let's see some special features:

◉ Basic calculator 300 es plus and 115 es plus: supports from basic mathematics to advanced math functions: percentage, powers, roots, trigonometric, logarithms calculator. Fraction calculation 991 ex supports convert fraction to decimal, mixed fraction and solve fractions problems.

◉ Advanced calculator 115 es plus: combines of hyper calculator and simple scientific calc. This calculator is a multi-functional advanced calculator 991 ex with all features in one app. Such as linear algebra, calculus, complex numbers, display result in rectangular and polar coordinates, matrix and vector.

◉ Scientific calculator 991 es plus: includes smart equation solver. Equation solver can solve quadratic, cubic equations, systems of equations. Caluculator solves any polynomial. Smart scientific calculator 991 ex has exponent calculator contains scientific calculations such as derivative, integral, square root calculation, factorial calculation, pi calculation, equation solver.

◉ Scientific calculator 991 ex: supports calculate with infinity number of digits, prime factors, random numbers, combinations, permutations, GCD and LCM. This calculator 991ex is a real engineering simulator. Scientific calculator has features of 500 es, 500 ms, 300 es plus, 991 es plus. Calculator keyboard layout same as calculator 300 es plus, 991 ex and es plus.

◉ Graphing calculator 84 plus supports function graph, polar, parametric and implicit function. Graphing calculator 84 can draw tangent, tracing, derivative, root, min and max. It simulates for graphing caluculator 83 and t1 84, 84 plus.

◉ Integral calculator 991 es plus provide powerful calculator to calculate integrate, derivative, differentiation and integration.

◉ This scientific calculator 991ex includes CAS (computer algebra system), which can perform symbolic calculation.

◉ Some other features: math formula, physics formula, unit conversion, theme, font and programming.

App ChangeLog

  • Improve matrix details.
  • Fixed some problem related to programming.

App Screens

Free scientific calculator es plus advanced 991 ex App Screen 1Free scientific calculator es plus advanced 991 ex App Screen 2Free scientific calculator es plus advanced 991 ex App Screen 3Free scientific calculator es plus advanced 991 ex App Screen 4Free scientific calculator es plus advanced 991 ex App Screen 5Free scientific calculator es plus advanced 991 ex App Screen 6

Apk scan results

Apk Scaned By TotalVirus Antivirus, Was Risky.Detected 1 From 55 Scan.
Scan Stats:confirmed-timeout:0|failure:1|harmless:0|malicious:0|suspicious:0|timeout:1|type-unsupported:11|undetected:63|
Name:MXoXxEXTC7m-KQdWQsv820200620-44243-1g3b3fo SHA-1:b775aa19264b8da32a0b709db61f5882401377a4 SHA-256:0b403436c223129c3650e58cf441d180e19a9de5c92e5eeda80f7b0bbf83b347 SSDEEP:393216:yRZtOOH1AmLaaWCkEGb61UW5gMpyo3hvgwv:UZXHZJm6LNbDv File type:Android Magic:Zip archive data, at least v2.0 to extract File size:24638016 Uncompressed Size:1712485 Contained Files :4394 Contained Files By Type:md:5,ttf:3,txt:1,xml:1,


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.

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.

read the contents of your SD card
Allows the app to read the contents of your SD card.

control vibration
Allows the app to control the vibrator.

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

modify or delete the contents of your SD card
Allows the app to write to the SD card.

install shortcuts
Allows an application to add Homescreen shortcuts without user intervention.

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. Anjan Debnath-avatar

    For scientific calculator in aadvanced mode, this is the best of the best. Contains from elementary calculation button to advanced topic computation, plotting to 3d, vector to differential calculus and then integral calculus what else not! Superb design and theme are extra gain. Many many thanks to the developer to make this app. It completely substitute the need of computer oriented heavy software. Thank you once again!

  2. Michael Agbana-avatar

    Great scientific calculator. It has an awesome chemistry calculation too and maths formula. It's a multi-functional calculator. And bug free. The only down is it can't do integration and differentiation Engineering high grade calculation but it pretty does a programmer calculations (pro version though). But clearly it's all good awesome app. Jah bless it's makers.

  3. Abdul-Rashid Saani-avatar

    Abdul-Rashid Saani


    This App is so awesome! It provides you with almost all mathematical features you need in Engineering, Accounting, Economics etc. Also very easy and convenient to use. In fact, I don't think nothing is lacking in this App. Everything you could thought of has been covered up here.

  4. lukas fuessel-avatar

    Very good design definitely handy if you forgot your calculator in class. What I would love to see would be some more arrow keys to go left and right since it's a little hard with my finger to tab on the exact spot if I miss typed something but other than that it's really good to work with that app.




    I must say the developer is doing a great job. This app is a real Scientific Calculator and an advanced one. I complained about my purchase and the developer responded accordingly and my problem is 100% resolved. I recommend you buy the premium version to earn all the features of the calculator. GREAT APP!!!

  6. Don CRISTOBAL ASPEE-avatar



    I love this author's work but they seem to keep making new similar apps rather than updating old ones. I paid for pro on a previous one;one new app came out that let me go Pro without paying as a result of the previous payment but this one doesn't. I don't want to pay for pro every update.

  7. kobby bartons-avatar

    I've even started using but I really must say I'm impressed by the interface. Also, the "mode" function comprises of all the "mathematics aspects" mainly matrixes, equations , Statistics, inequalities up to even degree 4!!!! Absolutely unbelievable!!! You guys have made an absolutely outstanding app. Looking forward to making my first purchase of the pro version 😍😍 I ⭐⭐⭐⭐⭐[ five star straight up]

  8. Hamza Sajid-avatar

    The calculator looks and feel awesome except the directional buttons. I'm so used to casio d-pad that it is really uncomfortable for me to use that. Can you please change the layout of directional buttons to something like D-pad? I'm sure other people must have also felt the same thing.

  9. Reuben Dale-avatar

    It does everything you want a calculator to do and it does it well with no ads, slowness or anything that isn't useful to the user, 10/10, would recommend to anyone that needs a more advanced calculator that the inbuilt one in your phone

  10. Godwin Sunday-avatar

    Easy and fast Fractional expressions. Mathematical formulas available. BODMAS obeyed (meaning, you can type things of +, -, * and / at same time). Results can be recalled. I love it more than others cuz it contains (more than) all I NEED

  11. Nate Evans-avatar

    Best free scientific calculator I have used to-date. The development team has done an excellent job on the layout, functionality, and scope of possible mathematical operations.

  12. Dar Javaid-avatar

    Very nice app.Feels so comfortable to use it. Was having some problem in getting premium version after paying, however admin helped quickly. Need some more development like every calculation to add in history without pressing answer

  13. Srijan Sarkar-avatar

    This is so much good. It is more better than my thoughts. 😊😊😊but here more infinity series must be include like Ramanujan series, etc... But inspite of this, it is one of the best app of all time.

  14. Adiba Khatoon-avatar

    It's a very helpfull app.... I love it...the design of the display is quite good...and I think it contains alot of function about which I've no idea.... In a nutshell...its a very good app.

  15. Movies download-avatar

    Movies download


    Class. The way it shows the results and in the variety in which it shows it is exceptional. When you download this in mob, you will literally forget about the actual calculator.

  16. Prince Owusu-avatar

    Splendid app. Good work by the developer. I have downloaded and installed numerous calc. apps from play store buh didn't get the features I desire until I found this great calc. app.✌

  17. Sandile Ndimande-avatar

    Sandile Ndimande


    Best Scientific calculator app I've ever had.👐💯It's like you got a casio in your phone. The app is fast too there are no ads when your data connection is closed. I love it 10/10.

  18. Zahid Chohan-avatar

    It's great to have all things at one place. In this app you have different formulas and programming calculation and it is more than a scientific calculator 👍👍👍

  19. patrick developer-avatar

    patrick developer


    Absolutely beautiful and user friendly, but it fails to do something more complicated like this: ((1-sqrt{33})/4)^(1/5) The results shows 0.83711.. But the answer is -1.03473..

  20. Ranajit's Creativity-avatar

    Ranajit's Creativity


    Very bad....i update it but still it gives incorrect value....the trigonometry function like sine, cos , tan values was incorrect...i submitted many wrong answers( even i have screenshots) bcz those values were incorrect....plz ckeck with normal physical calculator...though updated version now shows correct value....but it was wrong...and after previous update this was correct but some days ago i got wrong values...of cos (theta)...🙏🙏

  21. Florin Grigore-avatar

    An invaluable tool especially if you are crunching numbers all day of if you are a student. Hands down one of the best apps I've used to date.

  22. Florence Orhue-avatar

    I really love this. I was looking for a good calculator and I found this. Visually, it is clear. I appreciate the makers of this app. Kudos 👍👍

  23. Mazwi Zethembe-avatar

    This app is great, if there were more stars I would rate. People who have lost thier calculators or don't have this is the app for you. Best calculator app ever.

  24. Nurudeen Muhammad Aliyu-avatar

    Nurudeen Muhammad Aliyu


    Very sophisticated calculator. Solve many mathematical problems within short limit. Great innovation indeed. Kudos to the developers

  25. Scott Mather-avatar

    Seems like a better calculator app than most. The addition of equations and other helpful information is also a good touch!

  26. Juan Carlos Sandoval-avatar

    Juan Carlos Sandoval


    Love this app, very easy to use. Multi function, fast many themes to choose from.

  27. Vaibhav Gupta-avatar

    Does exactly what you want! I am giving 4* bcoz, although, mind you, the app is perfect! BUT I don't know why do they keep releasing a new app and ask us to replace the previous one with the new one! They can just update the app or leave it be. I implore the devs to pls seriously consider this advice of mine. Thank you.

  28. Nitu Kumari-avatar

    Best calculator I have found in play store. Almost all function is free available 😊. And by using paid every function are available.

  29. Cristus Pascal-avatar

    An awesome application! The developers were very innovative. I believe they'll keep flying higher!

  30. praveen udigiri-avatar

    praveen udigiri


    It is very helpful in scientific calculations in a easy manner. This app is very useful in comparison to other calculator apps.

  31. Lawrence Mucavele-avatar

    Lawrence Mucavele


    This is a fantastic app to use it is also user friendly, you don't have to struggle when looking for an answer. Keep up the good work guys.

  32. PHOENIX GAMERS-avatar

    It's a very nice app. This was the first time me seeing a free calculating app without ads

  33. Juma Msami-avatar

    Best app ever. Multiple calculations, great theme experience furthermore I like the idea of inserting mathematic formulas in it

  34. Constantin Zacharopoulos-avatar

    Constantin Zacharopoulos


    I use very few of the features that this app provides, my main tool is Excel. However, I love that I can see the whole formula I type (like a real calculator). The typing speed is also higher than the previous app I was using which makes it much more comfortable to use. The default 'skin' is great! Thanks!

  35. Bright Ofosu Boateng-avatar

    Bright Ofosu Boateng


    A very good app. The best I have ever seen. I don't need to buy a scientific calculator for my office use. Kudos!

  36. SpaceSkiier-avatar

    Wonderful interface... Feels as if I'm holding an actual scientific calculator in my hand... Great work Developers ! ☺ 😃

  37. Annor Samuel-avatar

    Wow!!, This app is very good for all students, it gives answers quickly, i would recommend to all students who are out there .

  38. Thomas K c-avatar

    Excellent speed. The detailed expression was unexpectedly great.

  39. Ismail Assan-avatar

    Awesome calculator,with different numirical calculations,fast, efficient and smooth.

  40. aqsa babbar-avatar

    Best calculator with amazing feature in free of cost .Very accurate calculation I Recommend it to everyone.

  41. Piyush Verma-avatar

    I never rate apps on play store but really the moment i used this app and i am so impressed with this, like i am totally ended up here giving 5 stars to this perfect value giving app.

  42. Jamie Stallan-avatar

    Very good layout, works like a casino, very intuitive to use

  43. Bobbly Bean-avatar

    Not bad, the total amount is automatically calculated for user. I like.

  44. Swathi K-avatar

    Excellent app. Just like real calculator. Sometimes it is even better .

  45. jagannath narjinary-avatar

    jagannath narjinary


    Great application 👌 Easy to use and wonderful. Everything is here. Thank you 😊

  46. Adebayo Sunmonu-avatar

    Adebayo Sunmonu


    Superb.Alll the features are excellent. Easy and very simple to use. Recommended!!

  47. Eesha Thakoor-avatar

    It is is very good calculator app, makes me feel like I am holding a real one!!! I really recommend this app to others... It is much better than the other apps, which constantly keep bugging you with premium membership adverts. It is a really helpful app on academic and professional level. Very well developed

  48. Arul Mary-avatar

    Very nice experience on the screen appearance and comfortable like regular calculator.

  49. Win Ko Ko-avatar

    This is an excellent app which can really replace the needs of physical sci calculator.

  50. Enock Sango-avatar

    Amazing App with everything needed and plenty of extras for free!!!

  51. Moses Labbi-avatar

    The app is good and I don't see any difference in this and normal scientific calculator Nice job.

  52. VISWANATHAN B-avatar

    Good app. Almost all required mathematical operations possible using this app.

  53. Yasmeen Tembo-avatar

    I really recommend this app for y'all who love mathematics because it works smoothly, no adds and gives adequate results.

  54. Gemechis Edosa-avatar

    I like it, but it makes our mind static. It reduces our IQ and our mind will not find solution at critical situation.

  55. Yung spedy-avatar

    So genius and awesome, I love it alot. I give 4* becoz am now using and can see is very useful

  56. sujeetkumar yadav-avatar

    sujeetkumar yadav


    Amazzing app for all techenical student . All functions are designed very proper and approprate manner .

  57. Balizong-avatar

    this app is amazing. it literally has it all, from useful calculator features to advanced formulas and everything else.

  58. Benedicta Akorli-avatar

    Benedicta Akorli


    Wow. I never knew there is something like this scientific calculator. Very easy and flexible to use.

  59. Bismark Bawuah-avatar

    It's the best calculator app on the market. I really love this app. Kudos to the developers of this app.

  60. Raymond Joseph-avatar

    I don't write comments generally. But this app is wonderful and does multiple functions. Also math formulae comes in handy at times. To top it up, there is graphing function as well. One of the very well thought apps available. Kudos to the team.

  61. Phil Ofori-avatar

    I have used different scientific calculators but I will recommend this app for all students including professors I wonder what will cause a student to fail or an individual making errors in learning whiles using this powerful, lovely and we'll design scientific calculator, very easy to use I will like to give 10 stars if possible. Thank you.....

  62. Aliyu Othman Muhammad-avatar

    Aliyu Othman Muhammad


    Very nice digital scientific cal. Ilove it as a physics teacher. You improve it to the extent. WELDONE for your wonderful app.

  63. Rao Qadar-avatar

    It is good application for calculating. But only ads problem occur

  64. Zantoh Maknian-avatar

    Best calculator ever. There are tons of options and functions that are yet to be discovered. Kudos to the development team of this app. Job well done.

  65. Syrel Canales-avatar

    This is really awesome! I love it! I am able to verify if my answers in calculus are correct 😄

  66. Amitabh Roy Sharma-avatar

    Amitabh Roy Sharma


    Works Perfectly as expected to. Has all the functions and is no less than the original Calculator. Though I have not tested it for some of the other functions like the Statistical ones, but am sure they would be fine too. Thanks.

  67. Kbis Gh-avatar

    Very convenient and helpful. Thanks for such a great app.

  68. Nickel Licus-avatar

    The app is wonderful and everything is good and is helpful but just that pop-up apps always come so please do something about it for us

  69. Philip Eenens-avatar

    Great calculator app, I downloaded it for a calculus class and I've managed to figure it out. It has also a list of all the functions and operations and how to calculate them... with steps.

  70. Daniel Uche-avatar

    This is truly a scientific calculator, I appreciate it,the developer did a good job, keep it up!

  71. Azad Gulabakh-avatar

    Great app and very useful for any serious mathematical calculations

  72. Johna F Muchindu-avatar

    Johna F Muchindu


    It more greatful to use and typical. I love it surely.

  73. Thomas Marantidis-avatar

    Thomas Marantidis


    I studie topography and this is my main tool. This is a real scientific calculator. I love the features it has in it. Thank you for this great app.

  74. Mv Samrat-avatar

    Very nice app. I personally recommend everyone to use this application. Just awesome

  75. BERNALD SESANTE-avatar



    Thank you so much. App runs smooth. Best for teachers and students. keep it up.

  76. Udhayakumar Rangaraju-avatar

    Udhayakumar Rangaraju


    Handy and Useful tool for all sort of engineering and scientific research work

  77. Todd Stehouwer-avatar

    I like HP calculators. Since they no longer make the scientific version this is my favorite substitute.

  78. David Benavides-avatar

    David Benavides


    I really liked this calculator. It's simply awesome. It is just like a real scientific calculator. Besides it contains a lot of useful formulas and extra information. Congratulations and thanks to the developers.

  79. friend pubg-avatar

    it is good app for kids if 7th grade who start learning new and hard questions. It help them to solve

  80. Liam Magnago-avatar

    I think it is absalutly great, but one ting that could be improved is i cannot tell if i have already pressed the solve (=) symbol already, if there was an indicator, then it could help rid some confusion

  81. Hubert Wirakotan-avatar

    Hubert Wirakotan


    As the usual scientific calculator with few upgrades. But why isnt the button that i can put on the notification menu bar not working? I press it and nothing happens.

  82. Bob Muhingo-avatar

    I like it, it have got smart features, alternative themes, I've just downloaded it so av got no much about it........

  83. Emmanuel Patrick-avatar

    Emmanuel Patrick


    Lifetime access to premium is less than $2 that is great compared to all the cool features. If I change my device, or login my google account to another device, would I still have acess to the lifetime premium

  84. mbongiseni goodenough-avatar

    mbongiseni goodenough


    Best calculator ever, no advert while you busy, working perfectly.

  85. nanesh niketan-avatar

    I love maths and this calculator it has all formulas and you new downloder search all things it is very very useful app irate this to 5 star I love the app Bye and thank you

  86. Lubomir Duchon-avatar

    Amazing application. Worth 1000 times the price.

  87. Anthony Jordaan-avatar

    Anthony Jordaan


    Excelent. Has the FACT button which is great for teaching.

  88. Cristian Timofi-avatar

    Cristian Timofi


    Very nice app. Still figuring it out, but a very good app

  89. Cedric Marie-avatar

    Best Scientific calculator out there. Definitely prefer using this instead of my usual calculator for simple or even complex calculations. Features from different models combined into one app.




    This app has been provided with awesome feature. This is not only a calculator but also a nano wekipedia to all engineering and othe learners. Thanks for providing this awesome feature.

  91. Shubham Choudhury-avatar

    Shubham Choudhury


    Negative integer square is positive not negative, please fix this.

  92. Yen Pin-avatar

    It has everything needed for mathematics and really similar to our physical scientific calculator. It's really help me during the MCO period when my scientific calculator is not around.

  93. Segun Adeyemi-avatar

    Best calculator so far. It's a perfect tool for research purpose

  94. Emmanuel Amoah-avatar

    Im really enjoying this app . its aqurate an efficient . thanks so much for this help . Good job😇

  95. Oluwafemi Akanni-avatar

    Oluwafemi Akanni


    Best Scientific calculator so far. Contains important mathematical formulas. Exactly what every student is looking for.

  96. Abhishek Chauhan-avatar

    Abhishek Chauhan


    Best layout , quit easy, familiar user interface

  97. Pranav SHINDE-avatar

    Takes bit of time for solving equations. I'm expecting as it is application it should be faster. But overall it's good compare to other stuff available on play store.

  98. datchu popi-avatar

    Nice & awsome app to use ingineering students & also for problems & maths😎😇😁🥳.... Thanks a lot🥰.....

  99. Eduardo Iván Nava Rodríguez-avatar

    Eduardo Iván Nava Rodríguez


    This is the best Calculator App I've ever tried. Definitely worth buying pro version.

  100. s g-avatar

    Lovely,clear display.A pleasure to use. Well done. Keep up the hard work. "I always use it when I need to count over 10."