D-Day Countdown - Tallyheart

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Everyone
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Everyone
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About this app

Tallyheart is a free D-Day countdown and anniversary app where your photos are the hero — and where home-screen widgets are free, unlimited and always right at midnight.

Count down to a trip, an exam or a wedding. Count up from the day you met, the day your baby was born, or the day you started running. Tallyheart does the math, shows the big number, and reminds you before the days that matter.

■ Photos first
Every day gets a cover: your own photo, one of our illustrations, or a soft color. Your main day sits at the top as a big photo card with the count and a progress bar to the next milestone.

■ Widgets that are free — and correct at midnight
• Four widgets: 2×2 Photo, 2×2 Ring, 4×1 Progress bar, 4×2 List of your next days
• As many as you like, all free
• They switch exactly at 00:00, after a restart and when you change time zones — no "stuck" numbers, no endless "loading"
• Pick the day, the color, a photo / solid / clear background, the text size, and "D-" or a plain number
• Pin a day to the status bar and lock screen, too

■ Milestones, automatically
Add one date and Tallyheart builds the timeline: 100 days, 200, 300, 500, 1,000 days … and every anniversary. For babies: 50 days, 100 days and the first birthday. Get a reminder the day before and on the day.

■ Count it your way
• "Count the start day as day 1" — the classic "100 days together" rule, or not
• Days, weeks, months or years-months-days
• Once, yearly, monthly or weekly
• Month-end and leap-day dates handled correctly (Jan 31 → Feb 28, Feb 29 → Feb 28)

■ Birthdays and the lunar calendar
Pick a friend from your contacts (no contacts permission needed), see how old they turn and their star sign. Lunar birthdays are converted to this year's date automatically — Korean lunar calendar from official data, or Chinese.

■ Reminders
On the day, 1 day, 1 week or 1 month before, or any day and time you choose. Reminders arrive on time and are re-armed after a restart.

■ Share cards
Turn any day into a story-size card with your photo: three layouts, save to your gallery or share in one tap.

■ Your data stays yours
• No account and no sign-up
• Everything stays on your phone
• Automatic daily backup to a folder you choose (for example Google Drive), plus manual backup files and CSV export
• Android backup brings your days to a new phone

■ Also
Calendar view with every day and milestone · search · custom order · dark mode · 31 languages.

Free, with a single small banner under your list — never on your days, your share cards or your widgets.

Questions or ideas? tanzsoftkor@gmail.com
D-Day countdown & anniversary widgets with your photos. Free, no account.
Updated on
Sep 26, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

A fresh new app icon that matches the new polaroid design.
Content rating
Everyone
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App support

About the developer
(유)텐즈소프트
tanzsoft@naver.com
강서구 공항대로 525 1501호, 1501호-나51호 (등촌동,비원오피스텔) 강서구, 서울특별시 07563 South Korea
+82 70-4150-7577

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