Gear Simulation & Calculation Downloads & RevenueGear Simulation & Calculation · App Store
Not in any tracked top chart right now.
Updated 7 Nov 2026 · rankings refresh through the day
DeveloperHeng Jia Liang
CategoryUtilities
Price3.99 USD
Released
Rating★ 4.3 (12)
Version1.1
Age rating4+
First seen by us
22 Oct 2026
Gear Simulation & Calculation update history & changes
Last change · 3 events since 11 Apr 2022Full timeline ↓Full timeline · 3 events
- 🆕Gear Simulation & Calculation first spotted by AppInsiderUnited States (found via developer)
- 📦Gear Simulation & Calculation version 1.1- Updated for the newest devices.
- Minor bugs fixed. - 🆕Gear Simulation & Calculation 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
4.3 ★
12 ratings
Measured
Gear Simulation & Calculation on the App Store
App details
App ID
1618701429
Publisher
Heng Jia Liang
On the store since
Apr 2022
4 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
1 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
4.3 ★
12 ratings
Measured
Ratings
12
Measured
About Gear Simulation & Calculation
Gear Simulation and Calculation calculate the gear ratio, torque and speed of gears train system.
Plus quickly simulate how the gear train work on the fly.
This is a great tool especially for DIYer who want to design their own Gears Train System quick and easy.
Preview how these system work before 3D print own gear system.
Features:
∙ Calculate gears fast and easy with parameter
∙ Input gear teeth number
∙ Output gear teeth number
∙ Input gear speed [rpm]
∙ Output gear speed [rpm]
∙ Input gear torque [Nm]
∙ Output gear torque [Nm]
∙ Output wheel diameter [in/cm]
∙ Calculate wheel speed [mph/kmh/ms⁻¹]
∙ Calculate Gear Ratio
∙ Calculate Mechanical Advantage
Formula:
Gear Ratio = input gear teeth number / output gear teeth number
Mechanical Advantage = output gear teeth number / input gear teeth number
Wheel Speed = output gear speed * wheel diameter * .pi * 60 / 63360
Law of Gearing:
T1/T2 = d1/d2 = n1/n2 = ω1/ω2
T1 and T2 = Number of Teeth on driver and driven gear respectively.
d1 and d2 = driver and driven gear diameter respectively.
n1 and n2 = Gear Speed in RPM for driver and driven gear respectively.
ω1 and ω2 = Angular Velocity in radian/sec for driver and driven gear respectively.
A gear is a circular machine element that can control the rotational movement's direction, torque, and speed. Gears are a necessary component of any machine having moving parts, such as a wristwatch or a car. are important components in modern engineering. A Gear train consists of two or more gears in series. It is used to increase or decrease the speed or torque of the output shaft.
The Gear Calculator calculates the mechanical advantage of a two-gear system in a machine. The gear ratio indicates how much a system's output gear is sped up or slowed down, as well as how much torque is lost or gained.
Gears available in a variety of shapes and sizes (the most common are involute gears), and these distinctions indicate how the rotating movement is translated or transferred. When two or more gears in a system mesh together while in motion, movement is transmitted. This set of gears is referred to as a gear train.
In a gear train, the gear ratio is the ratio of the input gear circumference to the output gear circumference. The gear ratio is used to calculate the number of teeth required for each gear to achieve the specified output speed/angular velocity, or torque.
Mechanical advantage in terms of torque
Riding a bike uphill is easier if you use a low-speed gear. When you do this, you get more torque and more power when travelling uphill.
Mechanical advantage in terms of speed
Hand drills are a good example of a simple machine that has a mechanical speed advantage. The drill bit spins at a high speed when the handle is cranked.
Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Plus quickly simulate how the gear train work on the fly.
This is a great tool especially for DIYer who want to design their own Gears Train System quick and easy.
Preview how these system work before 3D print own gear system.
Features:
∙ Calculate gears fast and easy with parameter
∙ Input gear teeth number
∙ Output gear teeth number
∙ Input gear speed [rpm]
∙ Output gear speed [rpm]
∙ Input gear torque [Nm]
∙ Output gear torque [Nm]
∙ Output wheel diameter [in/cm]
∙ Calculate wheel speed [mph/kmh/ms⁻¹]
∙ Calculate Gear Ratio
∙ Calculate Mechanical Advantage
Formula:
Gear Ratio = input gear teeth number / output gear teeth number
Mechanical Advantage = output gear teeth number / input gear teeth number
Wheel Speed = output gear speed * wheel diameter * .pi * 60 / 63360
Law of Gearing:
T1/T2 = d1/d2 = n1/n2 = ω1/ω2
T1 and T2 = Number of Teeth on driver and driven gear respectively.
d1 and d2 = driver and driven gear diameter respectively.
n1 and n2 = Gear Speed in RPM for driver and driven gear respectively.
ω1 and ω2 = Angular Velocity in radian/sec for driver and driven gear respectively.
A gear is a circular machine element that can control the rotational movement's direction, torque, and speed. Gears are a necessary component of any machine having moving parts, such as a wristwatch or a car. are important components in modern engineering. A Gear train consists of two or more gears in series. It is used to increase or decrease the speed or torque of the output shaft.
The Gear Calculator calculates the mechanical advantage of a two-gear system in a machine. The gear ratio indicates how much a system's output gear is sped up or slowed down, as well as how much torque is lost or gained.
Gears available in a variety of shapes and sizes (the most common are involute gears), and these distinctions indicate how the rotating movement is translated or transferred. When two or more gears in a system mesh together while in motion, movement is transmitted. This set of gears is referred to as a gear train.
In a gear train, the gear ratio is the ratio of the input gear circumference to the output gear circumference. The gear ratio is used to calculate the number of teeth required for each gear to achieve the specified output speed/angular velocity, or torque.
Mechanical advantage in terms of torque
Riding a bike uphill is easier if you use a low-speed gear. When you do this, you get more torque and more power when travelling uphill.
Mechanical advantage in terms of speed
Hand drills are a good example of a simple machine that has a mechanical speed advantage. The drill bit spins at a high speed when the handle is cranked.
Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Latest updates
1.1
- Updated for the newest devices.
- Minor bugs fixed.