RadiusLocker app icon

RadiusLocker

Lock phone, pause biometric unlocking, & require PIN upon smartwatch disconnect

merry cache miss studios · com.merrycachemiss.rl

Not rated yet 10K+ downloads v2.3.3 5.1 MB Android 5.1+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v2.3.3 (354)
Updated
Nov 27, 2025 (10 months ago)
APK size
5.1 MB
Requires
Android 5.1+ (API 22)
CPU support
Any (no native code)
Category
Tools (app)
Listed since
Mar 22, 2021 (at least)
Permissions
20 (4 sensitive)
Website
radiuslocker.co
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

RadiusLocker is an app by merry cache miss studios in the Tools category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

Since version 2.1.22, the APK grew from 2.9 MB to 5.1 MB. It asks for 20 permissions, 4 of them sensitive, including precise location, location in the background and approximate location. Compared with version 2.1.22, it adds 3 new permissions (“Foreground service connected device”, “Foreground service location” and “Foreground service system exempted”) and drops 1 (“Use exact alarm”).

What's new in v2.3.3

2.1.x: -Target new API level, you might need to grant RL many new permissions -New features -Had to remove some translations, but DE revamped. Source @ https://gitlab.com/merrycachemiss/radiuslocker & mirror https://app.radicle.xyz/seeds/maple.radicle.garden/radiuslocker -De-Googled a lot of internals (billing/opt-in crash reporter/firebase), the only part of Play left is the Wear OS part -Significant internal overhaul was done, email us with issues encountered (and provide a proper explanation)

Description

From the listing uploaded by “appupdater”.

RadiusLocker is a free open source (https://gitlab.com/merrycachemiss/radiuslocker & mirror at https://app.radicle.xyz/seeds/maple.radicle.garden/radiuslocker) app that automatically locks your phone when your smartwatch falls out of connection range, and then temporarily disables biometric unlocking features (face, voice, fingerprint, etc) until you've next entered your PIN. You can also manually trigger a mode to constantly require your PIN before you enter a sticky situation, or even automatically when you are sleeping (based on your daily wakeup alarm time), until you cancel this mode via the notification. The goal is to further lock down your phone's local data if it gets taken away from you, or left behind. Think of it as automating Lockdown mode. There is also a Wear OS companion app, which can be used to lock your phone manually while still in range. If you have problems with RadiusLocker not running in the background, check out the instructions for your device at https://dontkillmyapp.com/ If you are experiencing the "forever locking", notifications have to be enabled for the app, and you must be aware of the items that mention "Constant PIN" and "Bedtime mode" in Settings -- disable them if their behaviour is undesired. Notification allows exiting these modes. Also available are advanced options to avoid a RadiusLocker lock when your chosen wearable disconnects, such as: 🔓 Your phone is connected to a specified WIFI network SSID 🔓 Your phone is connected to another specified Bluetooth device 🔓 Your phone is charging Other handy features: 🔒 Constant PIN mode, which temporarily disables biometric unlocking and requires PIN on a longer-term basis (until cancelled): - Can be triggered automatically within 8HR before your phone's alarm, only while charging, to help prevent others from unlocking your phone using your face or fingerprint while you are sleeping. Smartwatch not required. - Manual triggers via Quick Settings tile, Wear OS companion app, or extra launcher icons. - Optionally triggered automatically when you disconnect from a chosen WIFI snooze network. ⏰ Lock retry every ~15 minutes if your phone didn't lock due to a Snooze. ⏰ Delay locking by set period in case watch Bluetooth disconnection was temporary and returns after a few seconds. 🔒 Lock if SIM gets removed. 🔒 Lock if power cable gets removed. ⚙️ Launch a Tasker task upon RadiusLocker lock, with an optional delay period in case your locking wearable returns. 🖐️ Require biometric authentication when cold-launching main app screen or cancelling scheduled lock retry and other events. Offers PIN fallback. 🚀 Extra launcher app icons for an immediate lock or starting Constant PIN mode. - You can use these icons for assignment of physical buttons on your phone (compatibility varies). For example, double press of the power button to lock instantly or start Constant PIN mode, instead of launching your camera. - The icons can also be launched by Tasker in the background, under custom scenarios of your choosing. Example: When leaving your favourite WIFI network, configured in the Tasker profile, launch the "app" for Constant PIN mode to disable biometrics while out in the world, until cancelled via its notification. Forcing a shutdown on your wearable can also be used for locking, if both devices are still in proximity and not in a Snooze state. RadiusLocker won't work on ZTE devices. ​RadiusLocker is not a lock screen replacement. This app uses the Device Administrator permission. You will be prompted for a Device Administrator permission request. Because of the Device Administrator permission, later uninstallation first requires you to remove RadiusLocker from the Device Admin list in the OS's settings (search for Admin). Please hit us at [email protected] for any issues or feedback, we won't always know what needs fixing for specific devices unless we're notified -- hardware is hard.

Version history

2 versions are listed, going back to v2.1.22.

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Nov 27, 2025.
  • Certificate issued to “merry cache miss technologies Inc.” This is the certificate of the Google Play version.
  • Same certificate as the other version checked

Store checks and file details

  • Developer signature verified Nov 27, 2025
  • Validated against Google Play Nov 27, 2025
  • Signed byCN=Andrew Kumar-Misir, OU=President, O=merry cache miss technologies Inc., L=Halifax, ST=Nova Scotia, C=CA
  • Signing certificate (SHA-1)5F:C7:9F:CC:36:61:1D:8F:9F:66:C2:13:05:C9:00:4C:C3:33:2D:81
  • File MD59422e6745831514aa717588acd58716f
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (20)

RadiusLocker requests 20 permissions, 4 of them sensitive.

Required hardware & features

RadiusLocker APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the RadiusLocker APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is 9422e6745831514aa717588acd58716f.

Tags

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