ChronoRate

Watch accuracy and timegrapher

Only for iPhone

Free · In‑App Purchases

iPhone

A precision toolkit for watch enthusiasts: measure accuracy, run timegrapher tests, manage your watch collection, and track performance over time. ChronoRate is a precision toolkit for mechanical watch enthusiasts who want to measure accuracy, monitor performance, 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 also includes timegrapher tools to help you evaluate rate, beat error, and overall performance. Whether you are checking a newly purchased watch, comparing positions, or following long-term changes in daily rate, ChronoRate helps you build a clearer picture of how your watches are performing. Features: • Measure watch accuracy with atomic clock sync • Run timegrapher tests on your device • Track historical performance and daily trends • Manage your watch collection and individual records • 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 mechanical watch performance.

Ratings & Reviews

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- Improved record display for clearer readability - Unified parts of the display logic to reduce possible confusion

Version 1.1.2

The developer, Chieh Chung Tsou, 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 Not Collected

    The developer does not collect any data from this app.

    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
    • Chieh Chung Tsou
    Size
    • 6.7 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    Languages
    English and 7 more
    • English, French, German, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Chieh Chung Tsou
  • Privacy Policy

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