How many days until your exam? Your anniversary? Your friend’s birthday? If you’re like me, you’ve probably lost track of at least one important date by now. D-day Counter solves that problem by giving you one clean place to manage every countdown in your life — no limits, no clutter.
I originally built D-day Counter for iOS because I kept forgetting important milestones. Whether it was tracking days until a certification test, counting up from an anniversary, or remembering birthdays, I wanted something dead simple: add a date, optionally add an emoji and note, and let the app do the rest. After launching on the App Store, I realized the need for this was universal — so today, I’m bringing it to Android.
What D-day Counter Does
- Unlimited countdowns — Create as many D-days as you need. Customize each one with an emoji and memo. Count down to future dates (D-35) or count up from past events (D+82).
- Smart categories — Organize by Exam, Anniversary, Birthday, Military, and more. See everything grouped at a glance so you’re never lost in a sea of dates.
- Yearly repeating events — Set a birthday or anniversary once and it automatically rolls over every year. No manual updates needed.
- Home screen widget — Check your nearest D-day without opening the app. It’s right there on your Android home screen.
- Calendar view and statistics — See all your countdowns on a monthly calendar. Get a breakdown of your events by category and see what’s coming up this month.
- Progress tracking — Set a start date and watch a visual progress ring fill up as you approach your goal. Great for motivation during exam prep or long-term projects.
The app is designed to be lightweight and private. There’s no sign-up required — just install and start using it immediately. All your data stays on your device. Nothing gets sent to a server, and the app works fully offline. I’ve included a dark theme and support for both English and Korean.
Who This Is For
If you’re a student counting down to a final exam or certification test, D-day Counter keeps you on track. If you’re in a relationship and want to celebrate milestones like your 100th or 1000th day together, it’s perfect for that. Never miss a family member’s or friend’s birthday again. And if you’re managing project deadlines, trip departures, or any big day ahead, this app organizes it all in one place. Basically, if there’s a date that matters to you, this app is built for it.
D-day Counter is now live on Google Play for Android. Download it, add your first countdown, and never miss a day that matters. Version 1.0.0 includes everything you need to get started — unlimited countdowns, widgets, calendar view, and more.
Play Store에서 다운로드: D-day Counter – Countdowns
iOS(App Store)에서도 다운로드: D-day Counter – Countdowns
Official page: reactiveworks.dev/apps/ddaycounter
Update history: ahngo13.github.io
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