CrownSide

CrownSide is the watch journal built for enthusiasts who care about the details. Whether you own one cherished piece or a growing collection, CrownSide helps you track every wear, every service, and every tick — all in one place. Your Collection, Organized - Add each watch with a photo, brand, model, serial number, purchase date, and personal notes. Everything you need to know about a watch is always a tap away. Daily Wear Log - Record which watch you wore each day — swipe right on a watch to log it in one motion. Browse your wear history on an interactive calendar and see yearly summaries with per-watch streaks — a personal diary of time on the wrist. Accuracy Tracking - Measure your watch's timekeeping performance over time. Log offset readings, filter by winding position, visualize drift on a scrollable chart, and see seconds-per-day rate for each entry. Know exactly how your movement is performing. Maintenance History - 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. Private by Default - No account. No subscription. Your data lives on your device. Export & Import - Back up your watches or move them between devices with a single JSON export. Your data is always yours.