Comparison

ChainLog vs Geer

Geer and ChainLog are both EU-built, ad-free PWAs. On the promise, they look alike. On scope and pricing, they diverge clearly.

Updated

Feature comparison at a glance

  • Price

    ChainLog
    Free
    Geer
    Free + Pro €2/mo

  • Platforms

    ChainLog
    Web (PWA)
    Geer
    Web (PWA)

  • Activity sync

    ChainLog
    Strava + Ride with GPS
    Geer
    Strava

  • Languages

    ChainLog
    EN · FR · ES
    Geer
    EN

  • Unlimited bikes free

    ChainLog
    Yes
    Geer
    2 bikes, 5 components (unlimited with Pro)

  • Tailored onboarding (terrain, conditions, weight)

    ChainLog
    Yes
    Geer
    No

  • Shareable maintenance certificate

    ChainLog
    Yes
    Geer
    No

  • Built-in resale listing

    ChainLog
    Yes
    Geer
    No

  • Invoice analysis from photo

    ChainLog
    Yes
    Geer
    No

  • Email + push alerts

    ChainLog
    Email
    Geer
    Email + push

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Where ChainLog differs

  • Unlimited bikes and components for free.
  • Threshold tailoring at onboarding: a clean road chain lasts 5,000 km, a muddy MTB chain 1,500 km - ChainLog sets the alerts on your real profile, not on an average.
  • Shareable maintenance certificate, tied to a resale listing.
  • Ride with GPS sync in addition to Strava.
  • Invoice analysis from a photo.
  • Long-form blog articles on wear for each component.

Where Geer wins

  • Web push notifications on top of email.
  • Very clean interface if you want pure tracking.
  • Strong brand identity, polished visual experience.
  • Component swapping between bikes (move a wheel or cassette from one bike to another) - on the ChainLog roadmap.
  • Distinct indoor/outdoor tracking (indoor trainer doesn't count as outdoor riding).
  • Pro from €1.67/mo (yearly) for unlimited bikes - fair value.

In practice

Geer bets on minimalism and polish. If you want pure tracking and value a very clean app, it's a solid pick. The €2/mo step for unlimited bikes is reasonable.

ChainLog covers more ground at the same zero budget: multilingual, profile tailoring, shareable certificate, resale listing, blog. Where Geer focuses on tracking, ChainLog tries to cover the whole bike lifecycle - from purchase to resale.

The difference

What a ChainLog certificate looks like

A timestamped public page with installed components, dated replacements, invoices and mileage. No competitor offers an equivalent to date.

See a real certificate →

Frequently asked questions

Geer or ChainLog in 2026?

Geer if you want a very minimal app and don't mind €2/mo for unlimited bikes. ChainLog if you want everything - multilingual, certificate, resale listing, invoice analysis - for free.

Does Geer support languages other than English?

Not today. Geer's interface is English-only. If you need French or Spanish, ChainLog covers all three.

What's the practical difference between Geer's and ChainLog's free tier?

Geer caps the number of bikes/components on free; Pro at €2/mo removes the cap. ChainLog has no cap from the start. On the distinctive features (certificate, listing, invoice analysis, multilingual), only ChainLog offers them, for free.

Can I migrate my data from Geer to ChainLog?

Not directly - Geer doesn't expose a standard export. ChainLog rebuilds your mileage history via Strava, and past services (chain swaps, brake pads, invoices) need to be re-entered manually, around 10 minutes per bike.

Does ChainLog have push notifications like Geer?

Not today, but it's on our roadmap. ChainLog sends alerts by email in the meantime. On mobile, Geer stays ahead on this point until ChainLog ships push.

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Free. Works with Strava, Ride with GPS or just an email.

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