Gear Ratio Calculator RPM Downloads & RevenueGear Ratio Calculator RPM · App Store
齿比计算器-车速转速
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
Developer润强 何
CategoryUtilities
Price28.00 CNY
Released
Rating★ 0.0 (0)
Version1.0
Age rating4+
First seen by us
31 Oct 2026
31 Oct 2026Gear Ratio Calculator RPM update history & changes
Last change · 6 events since 15 Jul 2026Full timeline ↓📈Dropped out of every chart we track🆕First spotted by AppInsider🆕Its developer released another app: Altimeter: GPS & Barometer📦Version 1.0
Full timeline · 6 events
- 📈Gear Ratio Calculator RPM dropped out of every chart we trackLast seen 30 Oct
- 🆕Gear Ratio Calculator RPM first spotted by AppInsider#6 in Top Paid · Utilities · China
- 🆕Gear Ratio Calculator RPM: its developer released another app: Altimeter: GPS & Barometer
- 🆕Gear Ratio Calculator RPM: its developer released another app: 时间记录：时间画像与统计
- 📦Gear Ratio Calculator RPM version 1.0No release notes
- 🆕Gear Ratio Calculator RPM released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Gear Ratio Calculator RPM on the App Store
App details
App ID
6789163240
Publisher
润强 何
On the store since
Jul 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN ZH
Size
2 MB
Also listed in
Productivity
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Gear Ratio Calculator RPM
Gear Ratio Calculator RPM is an offline drivetrain calculator for cars, motorcycles, RC builds, karting and 4x4 projects. It helps you plan tire, gear ratio, final drive and RPM changes before you buy parts or test a setup.
Built for real projects
Create a project for each vehicle or build. Save a baseline setup, duplicate it, then compare changes such as a new tire size, a different final drive, sprocket changes or alternate gear ratios. Calculation records are stored locally so you can return to previous results later.
What you can calculate
- Speed at a given RPM for each gear
- Engine RPM at a target road speed
- Theoretical redline speed by gear
- Tire diameter, circumference and speedometer error
- Final drive changes and cruising RPM
- Shift RPM drop and gear spread
- Motorcycle sprocket combinations
- Setup comparisons with tables and charts
Designed for offline use
No account, no ads, no subscriptions and no server are required. Your projects and records stay on your device. You can export results as PDF, CSV or images using the iOS share sheet.
Useful in the garage, at the shop or while planning a build
Use it to compare stock and modified setups, check highway cruising RPM, plan a track setup, estimate the effect of tire changes or prepare a report for a customer.
Important note
The results are theoretical estimates. Real-world performance can be affected by engine power, aerodynamic drag, tire deformation, slip, drivetrain loss, vehicle weight, road conditions and mechanical condition. This app is for planning and comparison only. Always follow local traffic laws and use the results safely.
Built for real projects
Create a project for each vehicle or build. Save a baseline setup, duplicate it, then compare changes such as a new tire size, a different final drive, sprocket changes or alternate gear ratios. Calculation records are stored locally so you can return to previous results later.
What you can calculate
- Speed at a given RPM for each gear
- Engine RPM at a target road speed
- Theoretical redline speed by gear
- Tire diameter, circumference and speedometer error
- Final drive changes and cruising RPM
- Shift RPM drop and gear spread
- Motorcycle sprocket combinations
- Setup comparisons with tables and charts
Designed for offline use
No account, no ads, no subscriptions and no server are required. Your projects and records stay on your device. You can export results as PDF, CSV or images using the iOS share sheet.
Useful in the garage, at the shop or while planning a build
Use it to compare stock and modified setups, check highway cruising RPM, plan a track setup, estimate the effect of tire changes or prepare a report for a customer.
Important note
The results are theoretical estimates. Real-world performance can be affected by engine power, aerodynamic drag, tire deformation, slip, drivetrain loss, vehicle weight, road conditions and mechanical condition. This app is for planning and comparison only. Always follow local traffic laws and use the results safely.
Latest updates
1.0
