Twelve O'clock
Hieu Pham Utilities iPhoneiPadiPod touch
Twelve O'clock is a free Utilities app for iPhone and iPad by Hieu Pham. Rated 4.4/5 from 83 ratings. Requires iOS 15.0. Updated October 2, 2026.
- Rating
- 4.4
- 83 ratings
- Price
- Free
- on the App Store
- Size
- 46 MB
- Age 4+
- Updated
- Oct 2
- 2026 · v3.5.3
Screenshots
About Twelve O'clock
Twelve O’clock is an app that helps track your watch accuracy easily in a realistic way. I can’t stress this enough: it’s “tracking”, not measuring instantaneous accuracy like a timegrapher device. It’s a manual and oldschool job but it brings so much fun. It reminds me of the old days when I had to synchronize my watch to the clock on the TV at 7pm every day. With Twelve O'clock you can: ** MANAGE YOUR WATCH COLLECTION * Add, edit, remove any item in a list of your watch collection * Include a nice wristshot of each watch ** KNOW YOUR WATCH ACCURACY * Simply add some checkpoints and let the app calculate the accuracy in *second per day* * A nice chart of the accuracy over the time ** LEARN MORE ABOUT HOROLOGY * Curated content for watch lovers (like me)
Ratings & reviews
4.4
83 ratings
What’s new
Version 3.5.3 · Updated October 2, 2026
Fix the bug that the plan is stuck at checking status
App privacy
The developer, Hieu Pham, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
Used for: Analytics
Alternatives to Twelve O'clock
Looking for apps like Twelve O'clock? Here are 6 similar apps on the App Store. The highest rated is ChronoLog • Watch Accuracy (4.6/5), and all 6 are free to download.
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ChronoLog • Watch Accuracy
4.6
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Timegrapher - watch accuracy
2.8
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Magnetized Wristwatch Checker
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Clockwork - Watch app
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tickIQ: Measure, Track Watches
4.6
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TickTracer - Watch Accuracy
4.2
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Twelve O'clock | 4.4 / 5 (83 ratings) | Free | October 2, 2026 | |
| ChronoLog • Watch Accuracy | 4.6 / 5 (229) | Free | Oct 20, 2026 | Compare |
| Timegrapher - watch accuracy | 2.8 / 5 (46) | Free | Mar 15, 2024 | Compare |
| Magnetized Wristwatch Checker | 4.6 / 5 (21) | Free | Sep 30, 2026 | Compare |
| Clockwork - Watch app | 4.4 / 5 (24) | Free | Sep 7, 2026 | Compare |
| tickIQ: Measure, Track Watches | 4.6 / 5 (805) | Free | Jun 4, 2026 | Compare |
| TickTracer - Watch Accuracy | 4.2 / 5 (9) | Free | Jun 9, 2026 | Compare |
Compare Twelve O'clock with the top alternatives: ratings, updates, ASO score and keyword gaps →