# iGearbox vs SunWest

The clearest difference is price: SunWest at Free against iGearbox's $4.99. SunWest also leads on update cadence (every 4 months vs every 55 months). iGearbox's advantage is iOS requirement (12.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

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

iGearbox ships an update every 55 months, SunWest every 4 months. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | iGearbox | SunWest |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.0 (6 ratings)](https://appshunter.io/ios/app/igearbox/id451320370/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 12 MB | 53 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [SunWest Christian Fellowship (AB)](https://appshunter.io/developer/1789432171) |

## 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


### SunWest

[App page](https://appshunter.io/ios/app/sunwest/id6740299303)

**In-app purchases:** none


## Frequently asked questions

### Is iGearbox free?

iGearbox costs $4.99, with no in-app purchases.

### Is SunWest free?

SunWest is free to download, with no in-app purchases.

### Do iGearbox or SunWest have ads?

Neither iGearbox nor SunWest shows ads.

### Which is updated more often, iGearbox or SunWest?

iGearbox ships an update every 55 months, and SunWest every 4 months. Most recently, iGearbox was updated on September 22, 2026 and SunWest on September 14, 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.*