What is Geer?
Geer tracks the wear on every component of your bike so you know when the chain, cassette, or brake pads are due before they fail. Connect Strava once and every ride you record gets attributed to the right bike automatically, with mileage flowing down to the individual parts. Their own line sums up the split: Strava tracks your rides, Geer tracks your parts.
It's a progressive web app rather than an app-store download — you install it to your home screen from the browser (iOS 16.4+ via Safari, Android 8.0+ with Chrome), and it works on desktop too. The company behind it, GEER BIKE OÜ, is run by two founders out of Tallinn, Estonia, is funded by subscribers rather than investors, and hosts on renewable-powered servers in Germany.
Key Features
Component wear tracking
Distance-based wear on chains, cassettes, brake pads, and anything else you install, with a color-coded dashboard showing each part's status at a glance.
Maintenance alerts
Push and email notifications when a component hits its service interval, so upkeep gets prompted instead of remembered.
Real-time Strava sync
New rides arrive the moment they upload to Strava, and edits or deletions update in real time. A full sync also runs daily, and you can trigger one manually anytime. A paid Strava subscription is not required.
Component swapping
Install, swap, and deinstall parts across bikes — the wear history follows the part, which matters if you move a power meter or wheelset between bikes.
Service history
A full maintenance log per bike and per component, replacing the spreadsheet most riders eventually abandon.
Ride-type awareness
Road, gravel, and indoor rides are distinguished so wear reflects how the bike is actually being used.
Who It's For
- Riders with multiple bikes juggling wear across a fleet
- High-mileage cyclists who go through chains faster than they track them
- Anyone who'd rather ride than manage maintenance — the app's stated audience
