Cragly
Climbing Log & Stats
- Age
- 4+ years old
- Category
- Sports
- Price
- Free In-app purchases
- Languages
- 44 EN · FR +42
- Requires
- iOS 17+ iPhone · iPad
- Size
- 6.2 MB
- Version
- 1.0
Screenshots
See Cogbook in action
iPhone
iPad
Overview
What is Cogbook?
Cogbook is a maintenance logbook built for cyclists who want to stay ahead of wear and tear instead of reacting to it. It works for road, gravel, mountain, and e-bikes, keeping every service, component, and cost in one place.
Instead of tracking your rides, Cogbook tracks your bike: chain, cassette, brake pads, tyres, and suspension all get their own wear gauge, so you know what needs attention before something fails on the road.
Read the full App Store description
Cogbook is the maintenance logbook for every bike you own — road, gravel, MTB and e-bike. Track component wear, log every service, and never miss maintenance again. It’s the mechanic’s workshop, in your pocket.
Most cycling apps track your rides. Cogbook tracks your bike — so you know exactly when your chain, cassette, brake pads, tyres or suspension need attention, before they fail.
The complete service log
- Log every service with date, parts, notes and cost
- A full history for each bike — your maintenance, documented forever
- A multi-bike garage: road, gravel, MTB, e-bike and more
Component wear, done right
- Per-component wear gauges (chain, cassette, chainrings, brake pads, cables, tyres) calculated by distance
- An up-to-date component database by brand, with realistic service intervals
- Chain-wear tracking with smart replacement alerts
- Advanced tracking: chain wax & rotation, sealant, suspension hours, full drivetrain — and parts that move between bikes
Smart maintenance reminders
- Reminders by distance, hours or calendar — per component
- Get alerted before parts wear out, not after
Mileage, automatic or manual
- Import your distance automatically or log it by hand — never forced to connect anything
- Apple Health integration for ride distance
E-bike ready
- Battery cycles, motor service and manufacturer intervals — the e-bike support other apps ignore
Your data, yours forever
- Reliable iCloud sync across your devices
- Export to CSV and PDF — your records are never locked in
Cost insights
- See what each bike and component really costs you over time
The service log, your bikes and your data are never paywalled.
Cogbook Pro
Unlock the full brand component database, advanced wear tracking, complete e-bike support, multi-rider family sharing, and CSV/PDF export.
- Monthly and Yearly plans (Yearly includes a 7-day free trial)
- Or a one-time Lifetime unlock
Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Your Apple ID is charged on confirmation. Manage or cancel anytime in your App Store account settings.
Privacy Policy: https://develak.com/privacy-policy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Highlights
What can you do with Cogbook?
Cogbook is a bike maintenance logbook for iPhone and iPad that tracks component wear, logs every service, and reminds you before parts fail.
Full service history
Log every service with date, parts, notes, and cost for a complete record of each bike.
Component wear gauges
See wear on your chain, cassette, chainrings, brake pads, cables, and tyres, calculated by distance.
Smart maintenance reminders
Get reminders by distance, hours, or calendar for each component, before parts fail.
Automatic or manual mileage
Import your distance automatically or log it by hand, with Apple Health integration for ride distance.
E-bike ready
Track battery cycles, motor service, and manufacturer intervals for your e-bike.
Your data, always yours
Sync across your devices with iCloud and export your records to CSV and PDF anytime.
Who it’s for
Who is Cogbook for?
-
Everyday riders
For road, gravel, and mountain bikers who want a clear record of when parts were serviced and what’s due next.
-
E-bike owners
For riders who need to track battery cycles, motor service, and manufacturer intervals alongside regular components.
-
Multi-bike households
For cyclists managing several bikes in one garage, with parts that sometimes move between them.
-
Detail-oriented mechanics
For anyone who wants a full history of services, parts, notes, and cost for every bike they own.
How it works
How does Cogbook work?
From “Add your bikes” to “Check wear and cost anytime”, in 4 steps.
Add your bikes
Set up a garage with each bike you ride, from road to e-bike.
Log services and mileage
Record every service with date, parts, notes, and cost, and import or enter mileage for each bike.
Set reminders per component
Choose reminders by distance, hours, or calendar for each part you want to track.
Check wear and cost anytime
Open Cogbook to see wear gauges, upcoming maintenance, and what each bike costs you over time.
In depth
Cogbook, in detail
How does Cogbook track component wear?
Cogbook calculates wear gauges for parts like your chain, cassette, chainrings, brake pads, cables, and tyres based on distance ridden. Each component is checked against an up-to-date database of service intervals by brand, so the gauge reflects realistic wear rather than a generic estimate.
Chain wear gets its own tracking with alerts when it’s time to replace it, and advanced tracking covers chain wax and rotation, sealant, suspension hours, and full drivetrain wear, including parts that move between bikes.
How does Cogbook support e-bike maintenance?
Cogbook tracks battery cycles, motor service, and manufacturer-specific intervals for e-bikes alongside the usual mechanical components. This means an e-bike gets the same detailed service log as any other bike in your garage, plus the extra checks specific to its motor and battery.
How does Cogbook keep your maintenance records safe?
Your service log syncs across your devices with iCloud, so your history follows you whether you’re checking a bike’s status from your iPhone or iPad. You can also export your records to CSV and PDF at any time, so your data is never locked into the app.
Cogbook keeps the service log, your bikes, and your data free to use, without a paywall on the core logbook.
Release notes
What’s new in Cogbook
Version
1.0
This is the first version of Cogbook, released on July 2, 2026.
FAQ
Cogbook: your questions, answered
Something else? The Cogbook support page covers purchases, sync and settings, and lets you write to us directly.
Is Cogbook free?
Yes. Cogbook is free to download from the App Store. Optional in-app purchases unlock extra features; they are billed by Apple to your Apple Account, and you can manage them at any time in your account settings.
Which devices does Cogbook work on?
Cogbook works on iPhone and iPad with iOS 17.0 or later.
How do I log a maintenance service in Cogbook?
Open the bike you serviced and add an entry with the date, parts used, notes, and cost. The entry becomes part of that bike’s full service history.
Can Cogbook track more than one bike?
Yes. Cogbook uses a multi-bike garage so you can manage road, gravel, mountain, and e-bikes side by side, each with its own service log and wear gauges.
Does Cogbook track mileage automatically?
You can import your distance automatically or log it by hand. Cogbook never forces you to connect anything, and it can use Apple Health for ride distance if you choose.
How do component wear gauges work?
Each tracked component, such as your chain, cassette, chainrings, brake pads, cables, or tyres, gets a wear gauge calculated by distance against a database of service intervals by brand.
How do maintenance reminders work in Cogbook?
You can set reminders by distance, hours, or calendar for each component, so you’re alerted before a part wears out instead of after.
What is free in Cogbook?
The service log, your bikes, and your data are never paywalled. You can log services, track mileage, and keep a full history for every bike at no cost.
What languages is Cogbook available in?
Cogbook is available in 44 languages: Arabic, Bangla, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Odia, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu and Vietnamese.
How do I get help with Cogbook?
Visit the Cogbook support page: it answers common questions about purchases, sync and settings, and has a contact form. You can also write to contact@develak.com. We read every message and reply personally.
Made by Develak
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