Chainline

About Chainline

Chainline keeps track of what wears out on every bike you own — and tells you before a worn chain eats your cassette.

What it does

• 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
• 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
• Every bike in the garage, kids' bikes included
• Replace a part in one swipe — the service is logged for you