# iGearbox vs ACT Math

The clearest difference is review sentiment: ACT Math at 100% against iGearbox's 17%. ACT Math also leads on price (Free vs $4.99) and rating (4.7 vs 3.0). iGearbox's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). On ads and device support there is nothing between them.

ACT Math is free to download; iGearbox costs $4.99 up front. ACT Math sells 1 one-off in-app purchase. iGearbox asks for nothing beyond the download.

ACT Math holds the better App Store score, 4.7 against 3.0. Both are backed by a comparable volume of ratings — 6 and 19 respectively. Written reviews point the same way: 17% of iGearbox's written reviews are positive against 100% of ACT Math's.

iGearbox ships an update every 55 months, ACT Math every 11 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | iGearbox | ACT Math |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/igearbox/id451320370/reviews) | **[4.7 (19 ratings)](https://appshunter.io/ios/app/act-math-algebra-lite/id585171630/reviews)** |
| Number of ratings | 6 | **19** |
| Positive reviews | 16.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 11 months** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 17 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | +4 |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Webrich Software Limited](https://appshunter.io/developer/290203591) |

## 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


### ACT Math

[App page](https://appshunter.io/ios/app/act-math-algebra-lite/id585171630)

This app provides comprehensive practice for the ACT Algebra section with numerous questions and detailed explanations. It includes mock tests, instant feedback, and progress tracking to help users prepare effectively for the exam.

**Highlights:** 490 ACT Algebra practice questions, 49 revision notes, Mock tests with mixed questions, Instant feedback on answers, Detailed explanations for each question, Progress tracking with charts, Revision by topic

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Question Bank | $1.99 | one-time |


## Frequently asked questions

### Is iGearbox free?

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

### Is ACT Math free?

ACT Math is free to download, with in-app purchases available.

### Which has better reviews, iGearbox or ACT Math?

ACT Math is rated higher. iGearbox averages 3.0 out of 5 from 6 ratings, while ACT Math averages 4.7 from 19 ratings.

### Do iGearbox or ACT Math have ads?

Neither iGearbox nor ACT Math shows ads.

### Which is updated more often, iGearbox or ACT Math?

iGearbox ships an update every 55 months, and ACT Math every 11 months. Most recently, iGearbox was updated on November 1, 2026 and ACT Math on November 1, 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.*