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
This app excels at two things: 1. Tracking the offset / accuracy of your mechanical watch, 2. Helping you to easily set your watch. As far as tracking the accuracy of your watch, I really like the ‘time was set’ option so that you don’t have to start a new timing run just because you update the time of the watch. As for setting the time, I really like the atomic clock with the loud ticks and beep at the top of the minute, and find it to be a very thoughtful feature. I recently regulated my Seiko automatic watch using TG, and it's very satisfying to be able to see the fruits of my effort using this app.Big thanks to the developer.
Excel file is better than this
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Total junk
• Allow the Wrist Time chart to extend to the bottom of the screen.
• Minor adjustments to the Wrist Time view’s layout.
• Improved data point and regression line scaling in scatter plots.
• Performance improvements.
Version 1.5.2
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, 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
Robert France
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.
