# mechanical design engine vs Mechanical Engineering Toolkit

The clearest difference is in-app purchases: mechanical design engine at none against Mechanical Engineering Toolkit's 1. mechanical design engine also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Mechanical Engineering Toolkit's advantage is update cadence (every 8 days vs every 2 months) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. Mechanical Engineering Toolkit sells 1 one-off in-app purchase. mechanical design engine asks for nothing beyond the download.

mechanical design engine ships an update every 2 months, Mechanical Engineering Toolkit every 8 days. The most recent releases landed on September 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | mechanical design engine | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews)** |
| Number of ratings | — | **64** |
| Positive reviews | — | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | — | Ad-supported |
| Size | 63 MB | 38 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [gan dae choi](https://appshunter.io/developer/1574341439) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### mechanical design engine

[App page](https://appshunter.io/ios/app/mechanical-design-engine/id1574341437)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mechanical Engineering Toolkit

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

This utility app provides a comprehensive collection of engineering equations and formulas for students and professionals. Easily perform calculations by selecting a formula and inputting variables, with detailed instructions and reference material included.

**Highlights:** Engineering equations and formulas, Mechanics of Material calculations, Theory of Elasticity formulas, Composite Material properties, Reference material, Variable input for calculations

**Features:** Vision Pro support

**In-app purchases (1)**

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


## Frequently asked questions

### Is mechanical design engine free?

mechanical design engine is free to download, with no in-app purchases.

### Is Mechanical Engineering Toolkit free?

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

### Do mechanical design engine or Mechanical Engineering Toolkit have ads?

Mechanical Engineering Toolkit shows ads; mechanical design engine does not.

### Which is updated more often, mechanical design engine or Mechanical Engineering Toolkit?

mechanical design engine ships an update every 2 months, and Mechanical Engineering Toolkit every 8 days. Most recently, mechanical design engine was updated on September 8, 2026 and Mechanical Engineering Toolkit on September 24, 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.*