WatchWatcher: Accuracy Tracker

Enhanced App Store Description

The most complete, precise, and effortless way to track your watch’s accuracy over time.
Whether you’re a casual owner or a serious collector, WatchWatcher helps you understand exactly how your timepieces are performing—day after day, week after week.

Powerful timing tools
• Add timing events in two ways: a simple manual tap or automatic extraction from an image.
• Reset your watch to an accurate reference time and continue tracking seamlessly—the app can recalculate all past events with a single instruction.
• View a beautiful, full-size graph in your browser showing all your watches at once.

Insightful accuracy data
• Switch between absolute difference and rate drift to see your watch’s behaviour from every angle.
• Discover how your watch compares to others—both across all users and within its specific brand.
• See average drift across all time, or focus only on the most recent two events.

Smart predictions that save time
• When you log a new event, WatchWatcher predicts where your watch should be based on historical drift—minimising adjustments and speeding up logging.
• Fine-tune prediction behaviour in settings for even more accuracy.

Import, export, and stay in control
• Easily back up or migrate your data with iCloud import/export or CSV.
• All online features work without creating an account.
• No subscriptions, no in-app purchases—just powerful watch-tracking tools, free and private.