# iGearbox vs Gear Metrology

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.

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.

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.

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.

## The numbers

| Metric | iGearbox | Gear Metrology |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/igearbox/id451320370/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gear-metrology/id1167543797/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 7 months** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 7 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Carl Zeiss AG](https://appshunter.io/developer/488066215) |

## What reviewers say

### iGearbox

[App page](https://appshunter.io/ios/app/igearbox/id451320370)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Gear Metrology

[App page](https://appshunter.io/ios/app/gear-metrology/id1167543797)

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

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*