# ChainLab: Bike Gear Simulator — Explore bicycle gearing

> Explore bicycle gearing (iPhone/iPad app by JIYULMOM.)

- Source: https://appshunter.io/ios/app/chainlab-bike-gear-simulator/id6827055204 (this page in markdown: same URL + `.md`)
- Developer: [JIYULMOM](https://appshunter.io/developer/379186743)
- Category: Sports, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 27.0 · 9 MB
- Languages: Korean, German (Germany), Russian, Vietnamese, European Spanish, Arabic, American English, Italian, Indonesian, Japanese and 6 more
- Released: 2026-10-26
- Data updated: 2026-11-07

## What is ChainLab?

Turn a virtual crank and shift gears to see how a bicycle drivetrain moves. Ride a looping virtual course and watch the auto shifter click through the cassette with drivetrain sounds and haptics, or take over and keep your cadence in the green. Compare two gear setups at the same cadence or speed on a virtual hill. See estimated speed, cadence and steady-state power. Save one setup for free; optional one-time Pro purchase unlocks unlimited saved setups.

Simulation outputs are estimates, not a physical measurement or compatibility check.
Terms: https://ootssu.com/chainlab/terms.html
Privacy: https://ootssu.com/chainlab/privacy.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ChainLab Pro | $6.99 | one-time |


## Is ChainLab safe?

Not enough ratings yet to assess ChainLab.

## Is ChainLab legit?

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


## Version history (last 2 releases)

### 1.0.1 — 2026-10-27

• iPhone Duo: half-fold it and the ride, the comparison and the mechanism take one half while the shifters, sliders and playback stay on the other. Stand it up like a laptop and the drivetrain runs on the upright half with the controls under your hands.
• Bug fixes

### 1.0 — 2026-10-27

No release notes.

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All apps by JIYULMOM: https://appshunter.io/developer/379186743

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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 2026-11-07.*