# Mechanical Engineering Toolkit vs Gear Calculator Pro

The clearest difference is ads: Gear Calculator Pro at none against Mechanical Engineering Toolkit's shown. Gear Calculator Pro also leads on rating (5.0 vs 4.8) and iOS requirement (13.0 vs 15.0). Mechanical Engineering Toolkit's advantage is ratings volume (64 vs 1). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Mechanical Engineering Toolkit sells 1 one-off in-app purchase and Gear Calculator Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Gear Calculator Pro holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Mechanical Engineering Toolkit has 64 ratings behind it against 1, so its average is the more settled of the two.

Mechanical Engineering Toolkit ships an update every 5 days, Gear Calculator Pro every 4 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Mechanical Engineering Toolkit | Gear Calculator Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gear-calculator-pro/id6463792360/reviews)** |
| Number of ratings | **64** | 1 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 47 MB | 6 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) | [志桂 李](https://appshunter.io/developer/1686507153) |

## What reviewers say

### Mechanical Engineering Toolkit

[App page](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443)

This professional engineering calculator provides instant results for students, researchers, and practicing engineers. It offers detailed calculation steps, formulas, diagrams, and unit conversions. Save inputs as projects and export results in various formats.

**Highlights:** Engineering equations and formulas, Step-by-step calculation breakdowns, SI and Imperial unit conversions, Save and export results (text, image, CSV, PDF), Offline functionality, Extensive library of engineering tools

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Gear Calculator Pro

[App page](https://appshunter.io/ios/app/gear-calculator-pro/id6463792360)

This professional mechanical design tool helps engineers and enthusiasts calculate and optimize various gear parameters. It offers accurate calculations for different gear types, custom parameter input, and real-time design previews.

**Highlights:** Accurate calculations for spur, helical, and worm gears, Customizable design parameters, Real-time calculation previews, Efficient gear design formulas and tools, User-friendly interface for all levels

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员 | $9.99 | one-time |


## Frequently asked questions

### Is Mechanical Engineering Toolkit free?

Mechanical Engineering Toolkit is free to download, with in-app purchases available.

### Is Gear Calculator Pro free?

Gear Calculator Pro is free to download, with in-app purchases available.

### Which has better reviews, Mechanical Engineering Toolkit or Gear Calculator Pro?

Gear Calculator Pro is rated higher. Mechanical Engineering Toolkit averages 4.8 out of 5 from 64 ratings, while Gear Calculator Pro averages 5.0 from 1 ratings.

### Do Mechanical Engineering Toolkit or Gear Calculator Pro have ads?

Mechanical Engineering Toolkit shows ads; Gear Calculator Pro does not.

### Which is updated more often, Mechanical Engineering Toolkit or Gear Calculator Pro?

Mechanical Engineering Toolkit ships an update every 5 days, and Gear Calculator Pro every 4 days. Most recently, Mechanical Engineering Toolkit was updated on November 3, 2026 and Gear Calculator Pro on November 3, 2026.

---

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