ChronoRate
Chieh Chung Tsou Utilities iPhoneiPadiPod touch
ChronoRate is a free Utilities app for iPhone and iPad by Chieh Chung Tsou. Requires iOS 17.0. Updated August 16, 2026.
- Price
- Free
- on the App Store
- Size
- 7 MB
- Age 4+
- Updated
- Aug 16
- 2026 · v1.3
Screenshots
About ChronoRate
ChronoRate is a precision toolkit for mechanical watch enthusiasts who want to measure accuracy, monitor performance, record watch details, and manage their collection in one place. Use atomic clock synchronization to record time deviation with confidence, then track each watch over time with clear trends and historical records. For deeper analysis, ChronoRate includes timegrapher tools to help you evaluate rate, beat error, amplitude, and overall movement performance. ChronoRate also helps you keep a complete record of each watch, including movement caliber, lift angle, warranty dates, and service or oil maintenance history. The watch overview page brings key details together so you can quickly review the full profile of every watch in your collection. Whether you are checking a newly purchased watch, comparing positions, following long-term changes in daily rate, or maintaining service records, ChronoRate helps you build a clearer picture of how your watches are performing over time. Features: • Measure watch accuracy with atomic clock sync • Run timegrapher tests on your device • Evaluate rate, beat error, amplitude, and movement performance • Track historical performance and daily trends • Manage your watch collection and individual records • Record movement caliber, lift angle, warranty dates, and service history • View a complete watch information overview page • Check dynamic mechanical moon phase information • View detailed statistics and performance insights • Organize measurements by watch and timing round ChronoRate is designed for collectors, hobbyists, and enthusiasts who want a practical and focused tool for understanding, recording, and maintaining mechanical watch performance.
What’s new
Version 1.3 · Updated August 16, 2026
What’s New in ChronoRate 1.3 • World Clock: Search and pin major cities to view precise NTP time, UTC offsets, and automatic daylight saving time updates. • Second-hand styles: Tap the clock face to switch between a smooth mechanical sweep and a quartz-style tick. • Time-setting cues: Turn them on from the upper-left corner and use five singing-bowl-inspired tones to set your watch more precisely. • Added confirmation before deleting individual timing and timegrapher records. • Improved localized layouts and overall stability.
App privacy
The developer, Chieh Chung Tsou, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to ChronoRate
Looking for apps like ChronoRate? Here are 6 similar apps on the App Store. The highest rated is Oscillo: Watch Accuracy Meter (4.9/5), and all 6 are free to download.
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Ratewell: Watch Timegrapher
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Oscillo: Watch Accuracy Meter
4.9
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Tickscope — Watch Accuracy
4.6
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Tempochron: Watch Timegrapher
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Watch Tracker - Collection
1.0
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Chronograde: Watch Accuracy
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| ChronoRate | – | Free | August 16, 2026 | |
| Ratewell: Watch Timegrapher | – | Free | Jun 26, 2026 | Compare |
| Oscillo: Watch Accuracy Meter | 4.9 / 5 (27) | Free | Oct 24, 2026 | Compare |
| Tickscope — Watch Accuracy | 4.6 / 5 (25) | Free | Oct 20, 2026 | Compare |
| Tempochron: Watch Timegrapher | – | Free | Oct 4, 2026 | Compare |
| Watch Tracker - Collection | 1.0 / 5 (1) | Free | Sep 11, 2025 | Compare |
| Chronograde: Watch Accuracy | – | Free | Oct 16, 2026 | Compare |
Compare ChronoRate with the top alternatives: ratings, updates, ASO score and keyword gaps →