Comparison

iGearbox vs Gear Metrology

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iGearbox

This app provides interactive tools to calculate gearbox ratios for regular and planetary gearboxes. It features a drag-and-drop design environment for gear trains and a dynamic graphic simulation for planetary gear sets, aiding in understanding and calculation.

Highlights
  • Interactive gear train design
  • Planetary gear set simulation
  • Ratio and speed calculations
  • Multiple gear train configurations
  • Dynamic component motion animations
  • Symbolic ratio equations
  • Dropbox data upload
Features
Read full description

iGearbox is an ideal educational App to interactively calculate the gearbox ratio for regular and planetary gearboxes. It offers two main tools: 1) Gear Train Tool A touch drag & drop-based design area that you can select the gears from the library, assemble, and calculate the ratio and speeds of each gear and the whole gear train. 2) Planetary Gear Set Tool An interactive and dynamic graphic based environment to learn about the planetary gear sets with different configurations and calculate ratios and the gearbox output. User selects the stationary, the input and the output parts, and observes the motion of gear set components in action. Entering the number of ring and sun teeth, the app calculates the ratio and the gearbox output for each configuration. Also, the symbolic ratio relation of the gearbox will be shown for each configuration. ******** Features ********* Gear Train Tool: - Touch/ drag & drop-based design environment - Multiple gear train configuration (up to 8 gears in train) - Ratio and speed calculations for each gear and the whole gear train Planetary Tool: - 6 different configurations. i.e., each component (ring, sun, planets arm) can be selected as stationary, input, or output components - Dynamic interactive motion of the components for each configuration (Animations) - Symbolic ratio equation for each configuration - Ratio calculation for each case based on the sun and ring # of teeth - Output calculations based on the gear configuration and specification - Planetary gear set formulations as a help document - Adjustable rotating speed for the animations of the gearset - Dropbox upload of screenshot and data ******************************* iGearbox is a perfect tool for instructors to teach and show the basics and fundamental concepts of regular and planetary gearboxes. Connecting the device to the monitor or projector, instructors can present the animations of the gearbox for different configurations. ******************************* iGearbox is a universal App that works on iPad, iPhone, and iPod Touch. You will be able to install the App on all these devices when you buy one copy. Disclaimer: iGearbox is developed to be used for educational purposes. Although the calculations done by this App were made with great care, it may contain errors or inaccuracies. Using the results of the calculations is the sole responsibility of the user.

About

Gear Metrology

This educational app provides an overview of characteristic values for gears used in industrial metrology. It serves as a reference for understanding gear specifications in a professional context.

Highlights
  • Characteristic gear values overview
  • Industrial metrology focus
  • Educational reference tool
  • Professional gear specifications
Read full description

An overview of characteristic values for gears in industrial metrology.

Screenshots

iGearbox4 screens
Gear Metrology2 screens

Verdict

The call

The clearest difference is price: Gear Metrology at Free against iGearbox's $4.99. Gear Metrology also leads on rating (5.0 vs 3.0) and update cadence (every 7 months vs every 55 months). iGearbox's advantage is ratings volume (6 vs 1). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Gear Metrology is free to download; iGearbox costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Gear Metrology holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: iGearbox has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

iGearbox ships an update every 55 months, Gear Metrology every 7 months. The most recent releases landed on October 29, 2026 and November 2, 2026 respectively.

Scorecard6 real differences · 4 level
iGearbox versus Gear Metrology: the parameters behind the verdict, then further details
ParameteriGearboxGear Metrology
Price$4.99Free — better
Rating3.0 (6 ratings)5.0 (1 ratings) — better
Positive reviews16.7% of reviews—
Number of ratings6 — better1
Update frequencyEvery 55 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.08.0 — better
Further details — not scored
Size12 MB7 MB
Age rating+44+
DeveloperMotionics LLCCarl Zeiss AG

Customer experience

iGearbox

All ratings6 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews6 reviews
Positive16.7%
Neutral33.3%
Negative50.0%

Gear Metrology

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iGearbox

No in-app purchases

None

Gear Metrology

No in-app purchases

Questions

Is iGearbox free?
iGearbox costs $4.99, with no in-app purchases.
Is Gear Metrology free?
Gear Metrology is free to download, with no in-app purchases.
Which has better reviews, iGearbox or Gear Metrology?
Gear Metrology is rated higher. iGearbox averages 3.0 out of 5 from 6 ratings, while Gear Metrology averages 5.0 from 1 ratings.
Do iGearbox or Gear Metrology have ads?
Neither iGearbox nor Gear Metrology shows ads.
Which is updated more often, iGearbox or Gear Metrology?
iGearbox ships an update every 55 months, and Gear Metrology every 7 months. Most recently, iGearbox was updated on October 29, 2026 and Gear Metrology on November 2, 2026.

Other comparisons