Chronographer is for people who enjoy mechanical watches. It does two things:
1. Tracks your watches’ long-term accuracy
2. Records wrist time
Chronographer can work with your whole watch collection. Give each watch a name and, optionally, a longer description. Select a picture from your Photos library and add additional notes, such as the watch’s specifications, purchase details, and service history. All information is stored in iCloud and automatically synchronized between your devices.
To track a watch’s accuracy, periodically collect data points comparing its indicated time to the current correct time. Chronographer tracks offsets (the difference from the correct time) and daily rate (how many seconds it gains or loses per day). It uses this information to create graphs and histograms that help you visualize your watch’s performance over time.
Chronographer also calculates the following metrics:
• Average Offset
• Max. Positive Offset
• Max. Negative Offset
• Last Offset
• Net Gain/Loss
• Best-Fit Rate
• Average Rate
• Fastest Rate
• Slowest Rate
• Last Rate
• Rate Variance
• Best-Fit Rate Drift
You can log the watch (or watches) you wear each day. Chronographer’s wrist time tracking feature lets you see which watches you wear the most and how long it’s been since you’ve worn each one.
You can use Chronographer to identify positional variation. When you record a data point, include the position (dial up, crown up, etc.) that the watch was stored in. Then, you can restrict the charts and metrics to specific positions and compare the results.
Chronographer includes a large digital clock to help when you set your watches.
For more information, including a detailed user’s guide, see https://www.rmfrance.net/chronographer
Ratings & Reviews
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• Fixed a typo in the Welcome screen.
• Improved the responsiveness of progress indicators.
• Improved the handling of sounds during app termination and active/inactive transitions.
• Performance improvements.
Version 1.5.1
The developer, Robert France, 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 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
Size
2.8 MB
Category
Utilities
Compatibility
Requires iOS 18.6 or later.
iPhone Requires iOS 18.6 or later.
iPad Requires iPadOS 18.6 or later.
Mac Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
Robert France has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
