Chainline: Bike Maintenance

Chain, Tire & Brake Pad Log

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Know when your chain, tyres and brake pads are due — on every bike in the family. No account, no subscription. 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.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, 磊磊 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    磊磊 张
    Size
    1 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 3 more
    • English, German, Japanese, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Leilei Zhang
  • Privacy Policy

    • More by 磊磊 张