DDayo - D-Day Countdown

Set it once, never miss a day.
DDayo is a smart D-Day counter with lunar date conversion, repeating events, and calendar integration.

■ Lunar Calendar Conversion
No more manual calculations for lunar birthdays.
Enter a lunar date and DDayo automatically converts it to this year's solar date.
Parents' birthdays, traditional holidays — set once, auto-updated every year.

■ Repeating D-Days
Automatically manage recurring dates like birthdays, anniversaries, and paydays.
Set yearly or monthly repeats and DDayo calculates the next occurrence for you.
No need to re-enter your important dates every year.

■ Calendar Integration
Import events from your device calendar and convert them into D-Days instantly.
You can also export D-Days back to your calendar.
Both import and export supported.

■ Calendar View
See all your D-Days on a monthly calendar at a glance.
Tap any date to view details or create a new D-Day right away.

■ Milestone Alerts
DDayo automatically calculates milestones like 100 days, 200 days, 1 year, and more.
View upcoming and past milestones in one place.
Set notifications so you never miss an important milestone.

■ Multiple Count Formats
View remaining time in days, weeks, months, years, or even real-time hours and minutes.
Switch between formats with a single tap on the detail screen.

■ Beautiful Themes
Customize each D-Day with over 20 unique themes.
From bright pastels to dark mode — match your personal style.

■ Home Screen Widgets
Check your D-Days without opening the app.
Add a widget to your home screen and see the countdown at a glance.

■ Categories & Favorites
Organize D-Days by category: birthdays, anniversaries, couples, exams, travel, baby, and more.
Pin important dates to the top with favorites.

■ Perfect for
- Tracking lunar birthdays without manual calculation
- Managing all your anniversaries in one clean place
- Converting calendar events to D-Day countdowns
- Getting automatic milestone alerts for 100 days, 200 days, 1 year
- Counting down to exams, trips, due dates, and more

■ DDayo PRO
Remove ads, unlock photo backgrounds, and premium themes with a one-time purchase.