The days that matter shouldn't be forgotten—exams, birthdays, anniversaries, payday, trips, a baby's birth... Day Keeper remembers them all.
[Countdown · Count up]
The same event can count down ("X days to go"—looking forward) or count up ("X days since"—looking back). One app for both countdowns and anniversaries.
[Solar · Chinese lunar]
Dual calendar display, accurate even in leap months. Never miss traditional festivals or lunar birthdays. Lunar calendar is optional.
[Flexible reminders]
Remind N days ahead with custom rules—never miss an important day. Background keep-alive guide prevents missed alerts.
[Home screen widget]
Add a widget with one tap—important days visible at a glance.
[Celebration poster]
When the day arrives, a full-screen celebration poster—set a background image, save and share.
[Custom colors]
Free HSV color picking, an exclusive color for each event.
[12 languages]
Simplified Chinese / Traditional / English / Japanese / Korean / Spanish / Portuguese / German / French / Russian / Arabic / Hindi. Follows system or pick manually.
[On-device only · nothing uploaded]
All data stays on your phone. No internet, no personal data collected, no third-party SDKs.
[One-time purchase · full features]
No in-app purchases, no subscriptions, no ads. Pay once, unlock everything.
