Unforget Calendar

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.