Diem – D-Day Countdown Widget

Diem counts the days to what matters, and puts that number on your home screen.

One big number on a calm screen. No feed, no sign-up, no clutter.

A wedding anniversary, an exam, a due date, a trip, the day someone was born: Diem shows exactly how many days are left, or how many have passed.

KEY FEATURES

- D-day and D+ counting. See the days until an upcoming date, or the days since one that has already passed.
- Yearly anniversaries. Birthdays and anniversaries roll over to the next year on their own.
- Home screen widget in three sizes (2x1, 3x2, 4x2), themed to match the app.
- Live hero card. The title, an oversized D-day number, a real-time HH:MM:SS counter to midnight, and a progress ring showing how far along you are.
- Reminders. A notification on the day itself, or 1, 3 or 7 days before. No exact alarm permission required.
- Add to calendar. Send any event to your system calendar app in one tap.
- Favorites and pinning. Keep the date you care about most at the top.
- Korean lunar calendar. Lunar anniversaries convert to the correct solar date every year, leap months included.
- Five color themes, each in light, dark or system mode.
- 14 languages, selectable inside the app: English, Korean, Japanese, Chinese (Simplified and Traditional), Spanish, French, German, Portuguese (Brazil), Russian, Indonesian, Vietnamese, Thai and Turkish.

BUILT TO STAY QUIET

Diem follows one rule: the number is the only thing that speaks. Warm neutral backgrounds, careful typography, no gradients, no emoji decoration. Your day looks good, not the app.

MADE FOR

Wedding anniversaries and birthdays. Exams, deadlines and payday. Due dates and baby milestones. Trips, concerts and release dates. Days since you quit something. Memorial days you never want to miss.

PRIVACY BY DEFAULT

- No account and no sign-up.
- No internet connection required. Diem works fully offline.
- Your dates stay on your device. Nothing is uploaded to a server.
- Notifications are the only permission Diem asks for, and only when you turn reminders on.
- No ads and no in-app purchases.

Add your first date in a few seconds, drop the widget on your home screen, and let Diem keep count.