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.