Chainline: Bike Maintenance

Chainline keeps track of what wears out on every bike you own — and tells you before a worn chain eats your cassette. EVERY BIKE, EVERY PART • Chain, cassette, chainrings, tyres, brake pads, sealant, cables, bar tape, suspension service, bearings • Wear by distance or by time, with a bar that turns amber when a part is due and red when it's time to replace • Starting limits for each part that you can change; check real wear with a chain checker too NO ACCOUNT NEEDED • Enter rides or set the odometer from your bike computer • Or import cycling workouts from Apple Health — Apple Watch, iPhone, or apps that save to Health • Nothing leaves your iPhone FOR THE WHOLE FAMILY • Every bike in the garage, kids' bikes included • Replace a part in one swipe — the service is logged for you • Move a part to another bike and its distance comes with it CHAINLINE PRO — ONE-TIME PURCHASE One bike with every feature is free. Pro adds unlimited bikes, moving parts between bikes, and CSV/backup export. Pay once — no subscription.