Best App Lock Apps for Android (Plus Built-In Options)
Your phone holds your messages, photos, banking apps and social accounts — so locking individual apps adds a valuable second layer of privacy beyond your screen lock. Whether you're handing your phone to a child, sharing it with family, or just want sensitive apps protected, here are the best app lock options for Android, including powerful built-in tools and trusted third-party apps.
Start With Android's Built-In Tools
Before installing anything, check what your phone already offers — modern Android has strong privacy features baked in, and they're more secure than most third-party apps.
- Private Space (Android 15 and later): Creates a separate, lockable area on your phone for sensitive apps. Apps inside it are hidden from your app list and require authentication to open.
- Samsung Secure Folder: On Galaxy phones, this creates an encrypted, password- or biometric-protected space for apps, files and photos — one of the best app-lock solutions available.
- App pinning: Built into Android, this keeps a single app on screen until you unlock, ideal when handing your phone to someone briefly.
- Xiaomi, OnePlus & others: Many manufacturers include their own "App Lock" in Settings under Privacy or Security — no download needed.
Best Third-Party App Lock Apps for Android
If your phone lacks a built-in option or you want extra features, these reputable apps are popular choices:
1. AppLock by DoMobile
One of the longest-running and most downloaded app lockers, AppLock by DoMobile lets you protect apps with a PIN, pattern or fingerprint. It can also hide photos and videos in a private vault and take a photo of anyone who enters the wrong code.
2. AppLock — Fingerprint & Password (SpSoft / IvyMobile)
A lightweight, easy-to-use locker supporting fingerprint and password protection, with a clean interface and low battery impact. A solid pick if you want simplicity.
3. Smart AppLock
Smart AppLock offers app locking plus extras like fake "force close" covers, intruder selfies and time- or location-based locking rules for more advanced control.
4. Keepsafe
Keepsafe focuses on locking and encrypting your private photos and videos in a secure vault, rather than locking every app — a great choice if media privacy is your main concern.
A Word on Safety and Permissions
App lockers need powerful permissions — usually Accessibility and "draw over other apps" — to function. That makes choosing a trustworthy app essential. Stick to well-reviewed apps from established developers on the Google Play Store, check what data the app collects, and be cautious of lockers stuffed with ads or asking for unrelated permissions. Whenever a built-in option like Private Space or Secure Folder is available, it's the safer choice because it's part of the operating system itself.
How to Choose the Right App Lock
Use your phone's built-in tools first — Private Space on Android 15+ or Secure Folder on Samsung are the most secure and cost nothing. If you need cross-device features or a private media vault, a reputable third-party app like AppLock by DoMobile or Keepsafe fills the gap. Whatever you choose, pair it with a strong screen lock and biometric authentication for real protection.
Frequently Asked Questions
What is the best app lock for Android?
For most people, Android's built-in tools are best: Private Space (Android 15+) or Samsung Secure Folder. If you need a third-party app, AppLock by DoMobile is the most established and feature-rich free option.
Does Android have a built-in app lock?
Yes. Newer Android versions include Private Space, Samsung phones have Secure Folder, and many other manufacturers (Xiaomi, OnePlus, Oppo) include an App Lock feature in their Settings under Privacy or Security.
Are app lock apps safe to use?
Reputable ones are, but they require sensitive permissions, so only install well-reviewed apps from established developers. Built-in options like Private Space and Secure Folder are the safest because they're part of the operating system and don't share your data with third parties.
Can I lock apps with a fingerprint?
Yes. Android's built-in tools and most third-party app lockers support fingerprint (biometric) unlocking, which is faster and more secure than a PIN or pattern.
Final Thoughts
Locking individual apps is a simple, effective way to protect your privacy. Start with your phone's built-in features — Private Space or Secure Folder — and only reach for a third-party app like AppLock or Keepsafe if you need extra features. Combined with a strong screen lock, app locking keeps your most sensitive apps for your eyes only.