A top-rated app lock trusted by millions. Protect any app with fingerprint face unlock pattern or PIN code. Beautiful lock screens that match each app's colors. Fast lightweight and 100% offline — your biometric data never leaves your device.

🔒 Four ways to lock your apps

✔ Fingerprint lock — unlock instantly with your fingerprint sensor
✔ Face unlock — unlock securely using your front camera
✔ Pattern lock — draw your custom unlock pattern
✔ PIN lock — enter a secure numeric passcode

Switch between lock types at any time. Use fingerprint or face as a fast secondary unlock alongside your pattern or PIN. Supports biometric authentication on all modern Android devices with a fingerprint scanner or face sensor.

🛡 Protect any app

Lock social media messaging email banking gallery camera browser or any app on your phone — WhatsApp Instagram Snapchat Facebook TikTok Telegram Chrome YouTube Photos and more. One tap to lock one tap to unlock. Use it as an app protector a privacy lock for sensitive apps or a parental control tool to keep children out of apps they shouldn't access. Perfect for keeping your private photos secret chats and personal data hidden from prying eyes.

🔐 Smart security

• Stealth mode — hide pattern dots so no one can watch you draw. Invisible pattern lock keeps your password safe from shoulder surfers
• Lock App Lock itself — prevent others from changing your security settings or disabling protection
• Auto-start on boot — protection resumes automatically after every restart. No need to reopen the app
• Real-time guard — locked apps are challenged with a password screen instantly when opened

🎨 Beautiful and personal

• Dynamic colors — each lock screen adapts to the app's icon colors
• Dark light or system theme — follows your preference automatically
• Sound and vibration — tactile and audible feedback on every interaction
• Pin favorites — swipe to pin apps to the top for quick management

⚡ Lightweight

Runs quietly in the background. Minimal battery and memory usage. No slowdowns no interference with other apps. A secure reliable app locker you can trust every day.

🔒 100% offline privacy

All credentials and passwords stay on your device. Face recognition uses an embedded AI model — no photos no biometric data and no information of any kind is sent to external servers. No account required no sign-up no cloud storage. Your privacy is not a feature it is the default.

❓ FAQs

Q: How do I set up face unlock?
A: Open App Lock → Settings → Lock type → Face recognition. Requires a front camera.

Q: How do I change or switch my lock type?
A: Open App Lock → Settings → Choose PIN code or pattern. Switching does not remove your locked apps.

Q: What is stealth mode?
A: It hides the dots while you draw your pattern so no one nearby can see it. Enable in Settings.

Q: Does it work after a restart?
A: Yes. App Lock starts automatically on boot.

Q: How does fingerprint unlock work?
A: A fingerprint icon appears on the lock screen automatically if your device has a sensor. Just touch it.

Q: How do I pin an app?
A: Swipe right on any app to pin it to the top of the list.

Q: Is my face data uploaded anywhere?
A: No. All face processing runs locally. Nothing leaves your device.

Whether you need a fingerprint lock app a face lock app a pattern lock screen or a simple PIN locker — App Lock has you covered.

Download App Lock now and protect your privacy in seconds.