Blokk
An iOS and Android app that locks the apps you choose behind a physical NFC tag: start a Block with a tap, and only that tag can end it early.
OngoingStarted October 2026
What it is
Blokk is for people who lose hours to certain apps. You pick the apps to block, set a timer and start a Block by tapping any NFC tag: a sticker, a fob, a transit card. That tag becomes the Block's Key. Leave it in another room, and opening those apps takes a real decision, not a passcode you can type.
How it works
- Key. Only the tag that started a Block can end it early.
- Strict mode. Nothing can end the Block early, not even the Key.
- Emergency unblock. A small budget for real emergencies, so the app is safe to use but not easy to cheat.
- Stats. Blocked time and streaks show whether it is working.
- Private by design. History, stats and streaks stay on the phone.
Native work
Blocking cannot be done from JavaScript. On iOS, Blokk uses Apple's Screen Time framework through its own Swift module and extensions. On Android it uses its own Kotlin module with an Accessibility service, and shows a full disclosure of what the service sees before it is turned on.
Status
The Android build is verified on the emulator. Checking it on an iPhone is waiting on a paid Apple team, and it is not in the stores yet.
