Onseol: Countdown Widget

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.