Gratitude Journal App • App Blocker
Dia Key app icon

Dia Key

Limit screen time on iPhone: lock distracting apps on a schedule and unlock only after your daily gratitude entry.

Dia Key is a free app lock for iPhone that helps you take control of screen time. Use the built-in locker to set scheduled lockouts. Your chosen apps stay blocked until you write a short gratitude entry. Private by design: your journal lives on your device or in iCloud, with no third-party services.