CrownSide
Mechanical Watch Companion
Track your mechanical watches — log daily wear, measure accuracy, and keep a full service history. Your entire collection, always in your pocket.
Track your mechanical watches — log daily wear, measure accuracy, and keep a full service history. Your entire collection, always in your pocket.
Add each watch with a photo, brand, model, serial number, purchase date, and personal notes. Your entire collection organized and always at hand.
Swipe to log today's wear in one gesture. A glanceable indicator shows which watch is on your wrist right now. Browse your full history on an interactive calendar.
Measure timekeeping performance over time. Log offset readings, visualize drift on a scrollable chart, and see rate statistics between services.
Keep a complete service record for every watch. Log overhauls and repairs with dates and notes so you always know when a watch last saw a watchmaker.
Back up your watches or move them between devices with a single JSON export. Your data is always yours, in an open format.
iCloud sync is coming soon — your collection will stay in sync across all your Apple devices automatically, with no extra setup required.
No account. No subscription. No tracking. Your data lives on your device and nowhere else.