# Chainline: Bike Maintenance — Chain, Tire & Brake Pad Log

> Chain, Tire & Brake Pad Log (iPhone/iPad app by 磊磊 张.)

- Source: https://appshunter.io/ios/app/chainline-bike-maintenance/id6824192570 (this page in markdown: same URL + `.md`)
- Developer: [磊磊 张](https://appshunter.io/developer/1887198832)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, German (Germany), Japanese, Chinese (Traditional, Taiwan)
- Released: 2026-10-20
- Data updated: 2026-10-31

## What is Chainline?

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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Chainline Pro | $4.99 | one-time |


## Is Chainline safe?

Not enough ratings yet to assess Chainline.

## Is Chainline legit?

Chainline: Bike Maintenance appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Chainline is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-20

No release notes.

## More apps by 磊磊 张

- [Twinkle Story](https://appshunter.io/ios/app/twinkle-story/id6761061989)
- [ProofTime: Sourdough Timer](https://appshunter.io/ios/app/prooftime-sourdough-timer/id6761090248)
- [TileCalc - Tile Calculator](https://appshunter.io/ios/app/tilecalc-tile-calculator/id6761092447)
- [HiveLog Bee and Apiary Tracker](https://appshunter.io/ios/app/hivelog-bee-and-apiary-tracker/id6761542862)
- [ReefLog: Reef Tank Tracker](https://appshunter.io/ios/app/reeflog-reef-tank-tracker/id6761686043)
- [KnitCount - Knitting Counter](https://appshunter.io/ios/app/knitcount-knitting-counter/id6761709235)

All apps by 磊磊 张: https://appshunter.io/developer/1887198832

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*