Gear Speed and Tire Size Downloads & RevenueGear Speed and Tire Size · App Store
Gear Speed and Tire Size is #85 in Productivity Paid in United States and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperScott Galaba
CategoryProductivity
Price0.99 USD
Released
Rating★ 0.0 (0)
Version4.1.8
Age rating4+
First seen by us
6 Nov 2026
6 Nov 2026Gear Speed and Tire Size update history & changes
Last change · 5 events since 26 Oct 2015Full timeline ↓📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider📦Version 4.1.8🆕Released on the App Store
Full timeline · 5 events
- 📈Gear Speed and Tire Size entered the top 100Top Paid · Productivity · US
- 📈Gear Speed and Tire Size charting in a new countryUnited States
- 🆕Gear Speed and Tire Size first spotted by AppInsider#19 in Top Paid · Productivity · China
- 📦Gear Speed and Tire Size version 4.1.8Update to support for iOS 27, iPhone 17, iPhone 17e, iPhone 18 Pro, iPhone 18 Pro Max, iPhone Air, iPhone Duo, iPad, iPad Air 11-inch, iPad Air 13-inch, iPad Pro 11-inch, iPad Pro 13-inch, iPad mini, and as a (Designed for iPad) app for Apple Silicon (arm64) Mac’s including the latest MacBook Neo, MacBook Air, MacBook Pro, iMac, Mac mini, Mac Studio, and Apple Vision Pro.… more
- 🆕Gear Speed and Tire Size 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
Best rank now
#85
Productivity PaidMeasured
Gear Speed and Tire Size on the App Store
App details
App ID
1048868556
Publisher
Scott Galaba
On the store since
Oct 2015
11 years on the store
Minimum OS
iOS 17.6+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
4 MB
Also listed in
Sports
Where Gear Speed and Tire Size's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | ProductivityPaid | #85 |
Apps near Gear Speed and Tire Size on the chart
Productivity Paid, around #85.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Gear Speed and Tire Size
The Gear Speed and Tire Size Calculator app is for comparing different tire and wheel combinations to transmission gears and differential ratios. Preload gear ratios are provide and gear speeds 4-8 are selectable to tailor the output results to the transmission (4-speed, 5-speed, 6-speed, 7-speed, 8-speed).
The Gear Speed Graph is interactive and allows one to compare results when hovering over / selecting a line graph point(s) to display the Comparison Graph Results Panel. The Gear Speed Graph also allows one to compare, hide, or show a given gear speed line graph by selecting the corresponding legend indicator to toggle the display of the selected line graph.
Calculations can be printed or saved into a PDF by selecting Share PDF Results.
Multitasking / Slide Over / Split View support is included for the latest iPads.
This App includes three (3) different calculators:
(1) Gear Speed Calculator - For calculating the speed in MPH or KPH for a given tire size, up to eight (8-speed) transmission gear ratios and differential ratio combination. The results appear in both an interactive Gear Speed Graph and Gear Speed Results Table (table not available for 3.5 inch display but does appear in the Share PDF Results feature). RPM Data Points are adjustable, allowing for further tailoring of the Gear Speed Graph and Results, to very specific RPM ranges, or to expanded the ranges beyond 9000 rpm.
(2) Tire Size Calculator - For comparing the original equipment tire size (Rim in inches) to alternate after market tire sizes.
(3) TMX Tire Size Calculator - For comparing the original equipment tire size (Rim in millimeters) to alternate after market tire sizes.
The Gear Speed Graph is interactive and allows one to compare results when hovering over / selecting a line graph point(s) to display the Comparison Graph Results Panel. The Gear Speed Graph also allows one to compare, hide, or show a given gear speed line graph by selecting the corresponding legend indicator to toggle the display of the selected line graph.
Calculations can be printed or saved into a PDF by selecting Share PDF Results.
Multitasking / Slide Over / Split View support is included for the latest iPads.
This App includes three (3) different calculators:
(1) Gear Speed Calculator - For calculating the speed in MPH or KPH for a given tire size, up to eight (8-speed) transmission gear ratios and differential ratio combination. The results appear in both an interactive Gear Speed Graph and Gear Speed Results Table (table not available for 3.5 inch display but does appear in the Share PDF Results feature). RPM Data Points are adjustable, allowing for further tailoring of the Gear Speed Graph and Results, to very specific RPM ranges, or to expanded the ranges beyond 9000 rpm.
(2) Tire Size Calculator - For comparing the original equipment tire size (Rim in inches) to alternate after market tire sizes.
(3) TMX Tire Size Calculator - For comparing the original equipment tire size (Rim in millimeters) to alternate after market tire sizes.
Latest updates
4.1.8
Update to support for iOS 27, iPhone 17, iPhone 17e, iPhone 18 Pro, iPhone 18 Pro Max, iPhone Air, iPhone Duo, iPad, iPad Air 11-inch, iPad Air 13-inch, iPad Pro 11-inch, iPad Pro 13-inch, iPad mini, and as a (Designed for iPad) app for Apple Silicon (arm64) Mac’s including the latest MacBook Neo, MacBook Air, MacBook Pro, iMac, Mac mini, Mac Studio, and Apple Vision Pro.