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Choose Geer if you're a Strava-only cyclist with a mechanical groupset and the lowest possible price is the priority — it's the cheapest dedicated option and a well-made one. Choose Componentry for native App Store and Play Store apps, direct Wahoo, Garmin, and Hammerhead integration, electronic shifting battery tracking, and weather-aware wear.
Geer's design quality is unusually high for a bootstrapped product. Onboarding is fast — connect Strava, done. The privacy-first positioning (EU-based, GDPR, no ads) is genuine, and a public roadmap and referral program show real product thinking. At €20/year it is the cheapest dedicated maintenance app, and for a Strava-only cyclist who wants a clean, modern tracker, it's genuinely good.
Geer is a progressive web app — it isn't in the Apple App Store or Google Play Store, and you install it by saving a browser shortcut to your home screen. That affects discoverability, push notification reliability on iOS, and the simple habit of opening a real app at the bike stand. Componentry ships native iOS and Android apps alongside the web app.
Geer connects through Strava exclusively. Wahoo and Garmin integrations sit on their public roadmap, but they haven't shipped. Componentry connects directly to Strava, Wahoo, Garmin, and Hammerhead today — no roadmap required.
Geer tracks mechanical components; Di2, AXS, and EPS batteries are not covered. Componentry monitors mechanical wear and electronic shifting batteries in one place.
Componentry enriches every activity with weather data, because a rainy commute wears a drivetrain harder than a dry training ride. Geer's wear tracking doesn't account for conditions — your estimates should reflect how you actually ride.
| Feature | Componentry | Geer |
|---|---|---|
| Component-level tracking | ||
| Multi-dimension wear (distance + time + duration) | ||
| Weather-enriched wear calculation | ||
| Electronic shifting battery tracking | ||
| Strava integration | ||
| Wahoo integration | ||
| Garmin integration | ||
| Hammerhead integration | ||
| Real-time activity sync | ||
| Native iOS app (App Store) | PWA only | |
| Native Android app (Play Store) | PWA only | |
| Web app | ||
| Maintenance alerts | ||
| Component swap tracking | ||
| Service history & notes | ||
| Multi-bike management | ||
| Indoor/outdoor wear differentiation | ||
| Bike fit measurements | ||
| Document & photo storage | ||
| Cost-per-distance analytics | ||
| Push notifications | ||
| Email notifications | ||
| Referral program | ||
| Monthly pricing available | ||
| Purpose-built for maintenance |
| Feature | Componentry | Geer |
|---|---|---|
| Free tier | 2-month free trial | |
| Monthly | $4/month | €2/month |
| Annual | — | €20/year |
| No credit card required |
Geer is the cheapest dedicated maintenance app in the category, and Componentry costs roughly double. The premium buys native App Store and Play Store apps, four direct provider integrations available today, electronic shifting battery tracking, and weather-enriched wear. If Geer ships its multi-provider roadmap this comparison changes — today, Componentry is the only option that connects to all four platforms.
There is no data lock-in to fight. Connect your Strava, Wahoo, Garmin, or Hammerhead account, add your bikes, and log each component once with its current mileage. From that point every ride updates your components automatically — nothing to migrate, nothing to maintain by hand.
Native apps. Four provider integrations. Electronic shifting tracking. Zero manual logging.
Start your 2-month free trial. No credit card required.