
Onseol: Countdown Widget
Days since, birthday & couple
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Free
In-App Purchases
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About
Onseol counts the days that matter — no account, no sign-up, no ads.
Your D-Days live on your phone. Onseol has no server and keeps no copy.
• Korean-style D-Days — D-100, D-7, D-DAY, and days-since counted from day 1. 100-day and yearly milestones, automatically.
• Lunar (음력) birthdays & memorials — Onseol finds the solar date for you each year.
• Home & Lock Screen widgets (iOS 16 or later) — automatic, or one D-Day of your choice per widget (iOS 17 or later).
• Reminders at D-7, D-1 and D-DAY, and on day-count milestones — all scheduled on your phone. A small card in the app on milestone days.
• Share a D-Day as a card, with a link that opens it in a friend's Onseol, ready to add.
• Back up your D-Days and their photos to a file you keep, and restore them on a new phone.
ONSEOL PRO — one purchase, forever. Not a subscription.
• Unlimited D-Days and all 16 colors
• Your photo on any D-Day — on its card, and in the Photo widget (iOS 17 or later)
• Three more widget designs: Ring, Photo and Minimal (iOS 17 or later)
• Count it your way — in years, months and days, in weeks, or in hours
• Every milestone with its date, from day 100 to day 10,000
• Ink and Photo share cards
Free: five D-Days, the classic widget in every size, reminders, lunar dates, milestone cards, the Paper share card and backup. Onseol Pro supports Family Sharing.
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What's New in Onseol
1.4.0
October 9, 2026
The ads are gone — all of them. Share a D-Day as a card, with a link that opens it in a friend's Onseol, ready to add. A small card in the app on milestone days. Back up to a file you keep. On iOS 17 or later, each widget can show the D-Day you choose. New in Pro: your photo on any D-Day, three more widget designs (iOS 17 or later), counting in years, months and days, in weeks or in hours, and every milestone with its date. Pro is still one purchase, and now supports Family Sharing.
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Subscriptions & In-App Purchases
$9.99
Onseol Pro
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