Your phone. Your rules.

BLOK is a physical app blocker for Android. Tap an NFC tag to lock distracting apps — tap again to unlock. The physical action is the point: friction you can't swipe away.

🌐 Website: https://blok-app.com 📦 Download: grab the latest APK from Releases

• Physical toggle — any standard NFC tag (NTAG213/215/216 stickers, cards, keychains) becomes your commitment device. No proprietary hardware.
• 100% offline — no accounts, no cloud, no analytics, no trackers. Everything stays on your device.
• Focus spaces — separate blocking profiles for study, work, sleep.
• Progress tracking — time saved and blocked attempts, computed on-device.
• Emergency unlocks — limited escapes for genuine urgency.
• Notification blocking — optional, hides notifications from blocked apps while a block is active.
• Free forever — no ads, no subscriptions, no in-app purchases.

An app that can lock your phone should never be a black box. Every line of BLOK is public so you can verify exactly what it does — and what it doesn't: nothing leaves your device. See the privacy policy.

1. Choose your apps — select what steals your focus.
2. Record any NFC tag — done from inside the app in seconds.
3. Tap to lock, tap to unlock — BLOK intercepts blocked apps via Android's Accessibility Service (used solely to detect the foreground app; it never reads screen content).

Requirements: JDK 17, Android SDK 35.

# debug build (no signing needed)
./gradlew assembleDebug

# release build — create keystore.properties in the project root first:
#   storeFile=your-key.jks
#   storePassword=...
#   keyAlias=...
#   keyPassword=...
./gradlew assembleRelease

Kotlin · Jetpack Compose · Room · Accessibility Service · NFC (NDEF)

Min SDK 26 (Android 8.0) · Target SDK 35

GPL-3.0 — free to use, study and modify; derivatives must stay open.

[email protected]