D-Day - Countdown & Birthdays

How many days until the day that matters? D-Day is a simple countdown counter for exams, birthdays, anniversaries, and every big date. Count down the days that are coming, count up the days since something started, and let yearly dates renew themselves automatically. What you can do • Countdown — see the days left until any date, like D-30 or D-1 • Days since (count-up) — track how long since you started, met, or quit • Yearly repeat — birthdays and anniversaries roll over on their own, with the age they're turning • Periods — start → end with progress to one decimal (contracts, study abroad, service terms) • Your alerts, your way — on the day, every 10/50/100 days (or any number), at 50/75/90% progress • Gift log — note gifts given and received, tick off thank-you gifts • Big numbers never cut off — D-458 or D+1234 always fits the widget • Quick add — one-tap templates for Exam, Discharge, Birthday, Anniversary, and Wedding • Home-screen widget — pin a D-day (or show the nearest one) right on your home screen • Share — send a D-day to a friend in a tap • Light & dark themes, plus in-app language switch (English, Korean, Japanese, Chinese) • No sign-up, works fully offline Great for • Students counting down to an exam or test • Anyone waiting on a big date — a trip, a due date, a move • Couples tracking anniversaries like 100 days or the first year • Never missing a birthday or wedding anniversary again Prefer no ads? A single "Remove ads" purchase in Settings takes them away for good. Add your first D-day now and never miss the day that matters.