Onseol: Countdown Widget

Days since, birthday & couple

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Onseol counts the days that matter — no account, no sign-up. Every date lives only on your phone. • Korean-style D-day — D-DAY, D-100, and days-since counted from day 1. 100-day and yearly milestones, automatically. • Lunar (음력) birthdays & memorials — converted to the solar date each year. • Home & Lock Screen widgets — they survive iOS updates and stay date-sorted. • Reminders — D-7, D-DAY, and milestones, all on device. No subscription. No account. A one-time Pro removes the ads and lifts the event limit.

Ratings & Reviews

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Free use is now ad-supported: a short ad after you save an event, and you can watch one to add a single event beyond the free five. A one-time Pro removes the ads and lifts the limit for good. Your dates still never leave your phone.

Version 1.1.0

The developer, Mustafa Salim Erek, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Mustafa Salim Erek
Size
  • 27.6 MB
Category
  • Lifestyle
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Erek Studio
  • Developer Website
  • Privacy Policy

    • More by Mustafa Salim Erek

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