# Gearmath

> Cycling gear ratio calculator. Ratio, gear inches, development, speed at cadence

Canonical page: [https://chrome-stats.com/d/com.spokelore.gearmath](https://chrome-stats.com/d/com.spokelore.gearmath)

## Overview

- **ID:** `com.spokelore.gearmath`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** JORDAN MATTHEW RYAN
- **Category:** GAME\_CASUAL
- **Version:** 1.0.2
- **Last updated:** 2026-05-29
- **First published:** 2026-05-29
- **Publisher country:** GB
- **Size:** 10 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.spokelore.gearmath)
- **Privacy policy:** [https://telegra.ph/Privacy-Policy--Gearmath-05-27](https://telegra.ph/Privacy-Policy--Gearmath-05-27)

## Description

Enter chainring teeth, cassette cogs (comma-separated), wheel ETRTO in mm. Get for every cog: ratio (chainring/cog), gear inches (traditional unit from penny-farthing days), development in metres per crank rev, and resulting speed at your chosen cadence (40-100 rpm). Save complete setups - compact road, gravel 1x, MTB - and recall later. The Concepts tab explains gear ratio vs gear inches vs development vs gain ratio, Q-factor, cross-chaining, compact vs sub-compact.

## Rankings

- #3,138,174 — Overall

## Permissions and access

### Permissions

- `com.android.vending.CHECK_LICENSE`
- `com.spokelore.gearmath.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Similar extensions and apps

- [Bicycle Gear Ratio](https://chrome-stats.com/d/com.niriko.gearratioapp) — 11,754 users, 3.83 / 5
- [Gear Calculator](https://chrome-stats.com/d/com.emeadevgroup.cyclegeartrack) — 193 users
- [MTB Gear Ratio](https://chrome-stats.com/d/com.rlued.gear_ratio) — 28,314 users, 4.80 / 5
- [Gear Ratio Calculator 2](https://chrome-stats.com/d/jp.abt.gearratio2) — 5,546 users
- [Gear Ratio Calculator](https://chrome-stats.com/d/com.puyiuivewvbew.njhguyiuhoijvew) — 3 users
- [FixedGearCalc](https://chrome-stats.com/d/com.tiredbluewhale.fixedgearcalc) — 1 users
- [Racing Gear Calculator](https://chrome-stats.com/d/com.RAHGames.GearRatioCalculator) — 2,863 users
- [BMX Gearing Calculator](https://chrome-stats.com/d/com.bmxcalculator.app) — 431 users
- [Gear Ratio Calculations Tool](https://chrome-stats.com/d/com.gear_tool) — 3,393 users
- [Mechanism Tools Calculator](https://chrome-stats.com/d/com.smegenys.mechanismtoolscalculator) — 110 users
- [SpinRatio](https://chrome-stats.com/d/com.gr.spinratio) — 19 users
- [Gearbox Ratio Calculator](https://chrome-stats.com/d/com.samsonas.gearboxcalculator) — 812 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/com.spokelore.gearmath)