# Mechanical Engineering Toolkit vs Solex Updater

The clearest difference is in-app purchases: Solex Updater at none against Mechanical Engineering Toolkit's 1. Solex Updater also leads on ads (none vs shown) and iOS requirement (10.0 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. Solex Updater asks for nothing beyond the download.

Mechanical Engineering Toolkit ships an update every 8 days, Solex Updater every 2 months. The most recent releases landed on September 24, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Mechanical Engineering Toolkit | Solex Updater |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 38 MB | 20 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) | [Xiamen Solux Home Lifestyle Co. Ltd.](https://appshunter.io/developer/1219236634) |

## What reviewers say

### 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 |


### Solex Updater

[App page](https://appshunter.io/ios/app/solex-updater/id6739098406)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Engineering Toolkit free?

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

### Is Solex Updater free?

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

### Do Mechanical Engineering Toolkit or Solex Updater have ads?

Mechanical Engineering Toolkit shows ads; Solex Updater does not.

### Which is updated more often, Mechanical Engineering Toolkit or Solex Updater?

Mechanical Engineering Toolkit ships an update every 8 days, and Solex Updater every 2 months. Most recently, Mechanical Engineering Toolkit was updated on September 24, 2026 and Solex Updater on September 12, 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.*