App Lock - Hide Apps & Photos

AppLock protects your apps, photos, and videos with a PIN, pattern, fingerprint, face unlock, or a hidden knock code — and keeps everything else about your phone completely private. No ads. No login. No data ever leaves your device. ACCESSIBILITY SERVICE (OPTIONAL) AppLock offers an optional "Instant Lock" feature that uses Android's AccessibilityService API to detect the moment a protected app opens, so the lock screen appears instantly instead of after a brief delay. It is off by default - you can turn it on or off anytime from Security Settings. When enabled, AppLock only checks which app is currently in the foreground; it never reads on-screen content, never collects any data, and nothing ever leaves your device. 🔒 LOCK ANY APP Choose any app on your phone — WhatsApp, Gallery, banking apps, social media — and require unlock every time it's opened. Supports PIN, pattern, biometric (fingerprint/face), and a secret knock-code rhythm. 🖼️ HIDDEN VAULT Move private photos and videos into an encrypted vault (AES-256) that's removed from your regular gallery and Google Photos entirely — not just hidden, actually gone from anywhere else on the device. Auto-hide new screenshots from a folder you choose, or share straight into the vault from any gallery app's Share button. Bulk select, release, or delete anytime. 👤 GUEST MODE Hand your phone to someone else without worry — Guest Mode locks everything except the one app you allow, on a timer, and reverts automatically. 📸 INTRUDER LOG Optional front-camera photo captured on a failed unlock attempt, so you know if someone tried to get in — stored encrypted, viewable only by you. 🎭 DISGUISE MODE Make AppLock's own icon look like a plain Calculator — a real, working calculator until you type your secret code. 🛡️ SECURITY SCORE & STREAK A live score shows how well protected you are, with one-tap fixes for anything missing — plus a daily streak to keep you on track. 🚨 PANIC LOCK & BREAK-IN ALARM Instantly lock everything from a Quick Settings tile or notification button. Turn on a loud alarm that triggers after repeated failed unlock attempts. 🧰 BONUS TOOLS Screen Time dashboard, Weekly security recap, Unit Converter, Flashlight, Compass, QR Scanner & Generator, PDF Toolkit (images to PDF, merge, compress), Photo Compressor, and Duplicate Photo Finder — all built in, all free, all processed on your device. 🔐 YOUR PRIVACY, ACTUALLY RESPECTED • No account or sign-in required • No analytics, no crash reporting, no advertising SDKs • No network requests of any kind — everything works fully offline • Camera and file access are used only for the specific feature you turn on, only while you're using it • Your PIN, pattern, and recovery code are stored only as salted cryptographic hashes — never recoverable, not even by us Download AppLock and take real control of your phone's privacy — free, no ads, no catch.