On Time - Timer Game

Stopwatch Reaction Time Test

Only for iPhone

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

iPhone

Stop the timer on the dot. Easy to play, hard to perfect. New themes and global leaderboards. How well do you know 10 seconds? Press START. Count to ten in your head. Press STOP. Stop the timer at exactly 10.00. That's the whole game. Easy to play, hard to perfect. It's just you against your own internal clock. How close can you get? How to play • Tap START and start counting in your head • Tap STOP the instant you reach 10 seconds • See exactly how far off you were, then try to beat it Features • One-tap play — START, STOP, RETRY, nothing else to learn • Three modes — Normal, Blink (timer flashes), Blind (timer hides) • Infinite mode — Streak: tap at 1.00, 2.00, 3.00… without a miss; Challenge: clear stage after stage • Extended precision — chase 10.0000 down to four decimals • Global leaderboards — rank worldwide for the most 10.00 stops and the closest Extended stop, all-time and weekly, in every mode • Achievements to collect in every mode • 6 unlockable themes, earned through play or with Stars you collect • Daily quests and login streaks • Sign in with Apple or Google — keep your progress on any device • Clean, distraction-free design built for focus No luck, just your sense of time. Can you hit 10.00 on the dot?

Ratings & Reviews

  • This app has not received enough ratings or reviews to display an overview.

• Refreshed game screens with larger icons and clearer controls. • All four modes stay visible on narrow screens in a 2×2 layout, with a better-placed precision switch. • Improved layouts for small phones, larger text, and foldable screens.

Version 2.0.0

The developer, Byung Hun Lee, 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:

    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Location
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics

  • Data Not Linked to You

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

    • Diagnostics

Privacy practices may vary based, for example, 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

Provider
Byung Hun Lee
Size
116.4 MB
Category
Board
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 and 13 more
  • English, Arabic, French, German, Indonesian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Vietnamese
Age Rating
4+
In-App Purchases
Yes
  • 10 Stars $0.99
  • 60 Stars $4.99
  • Remove Ads $2.99
  • Learn More
Copyright
© 2026 Triple Up
  • Developer Website
  • Privacy Policy

    • More by Byung Hun Lee