App Lock

aload0

2.5.1 · GitHub

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Privacy Android 8.0+ 2 months ago MIT Recommended

245 ShizuStore

44.5k GitHub

894 Stars

2 MB Size

More about this app

Lock sensitive apps with a PIN and optionally biometrics

App Lock

Open Source Android App Locker & Privacy Guard

App List Settings Password Screen

Set Password Unlock time

Set Password

Overview

AppLock is a modern, open-source Android app locker designed to protect your privacy and sensitive data. Lock any app, prevent unauthorized access, and enjoy a seamless Material You experience. No root required.

Caution

Google Play Protect is blocking some people from installing/updating App Lock because it uses Overlay Permission. It uses a false pretext of "this app may try to access sensitive information" without any base or information. If this happens to you, consider disabling Play Protect temporarily as mentioned here.

You may enable it back later after you install the app. We understand this introduces unnecessary friction but there's nothing we can do about it. Google does not like it when other developers try to fill the gaps they create themselves.

Note

You may confirm that the app is completely secure

VirusTotal Analysis: v1.5.0 Analysis

Exodus Privacy: Privacy Report

Features

Material You design, adapts to your theme
Biometric and PIN authentication
Fingerprint, Face Unlock, and PIN support
Lock any app on your device
Anti-uninstall protection
Anti-uninstall protection for user apps
Unlock timeout for convenience
No root required
One-tap app locking
All data stays on your device
Real-time background protection
Lightweight and fast

Download

The app is available for download via F-Droid, IzzyOnDroid aswell as Github Releases.

Beta Builds can be found here

Use Cases

Shared devices
Parental controls
Protecting work apps
General privacy

Support Development

If you find AppLock useful, please consider supporting its development with a small donation. Every contribution matters.

OpenCollective: https://opencollective.com/invokevirtual

Bitcoin (BTC): bc1qec5ccz85qn90a6zxnqnes0rx274cv6vw7j5x4g

Ethereum (ETH): 0xD80A8D6E0fa433A8bDFC2D3F325159Db70605816

Solana (SOL): 7FxTAJLmhXFp6wxVbUTpf8jDmzEX1CKVMdE8oLPNQvyb

Litecoin (LTC): ltc1q3pqyj5ge5rdmqr00w03x4tlhm6rhcc6wrfyx8k

Monero (XMR): 44w9JtiXxwifyH5CU6Ln1BNViyWNz4z7pEZ4nqbCvUejiK3yEjdyAv6bAofXX2Eh6Fbe3DXJ6eCX6YWKh9SF15fyKBjeJ5H

UPI (India): pranavpurwar@fam

License

MIT License

Copyright (c) 2023-2025 Pranav Purwar

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

How Shizuku is used

Can lock apps by detecting foreground app, block uninstalls, and restore accessibility access through Shizuku with `IActivityTaskManager`, `IPackageManager` and `settings` commands.

This is an AI-assisted analysis of Shizuku-related usages in the app's public source code. It is best effort, so it may not catch every single usage.

How this app uses Shizuku

App Lock uses Shizuku as an advanced backend to detect and protect apps without relying only on accessibility or usage access.

Detect foreground apps: the Shizuku backend polls the current visible tasks every half second through Shizuku, so opening a locked app triggers the PIN or biometric lock screen.
Block app uninstalls: apps the user marks in the Anti-Uninstall list are marked uninstall blocked through Shizuku, so they cannot be removed until unmarked.
Restore accessibility access: if the lock service is stopped while Anti-Uninstall protection is on, the saved accessibility service is turned back on through Shizuku with the settings get and settings put shell commands.