# Converter vs Mechanical Engineering Toolkit

Converter and Mechanical Engineering Toolkit both sit at 4.9 stars, but that hides the real split: 96% of Converter's written reviews are positive against 57% of Mechanical Engineering Toolkit's. Converter also leads on in-app purchases (none vs 1) and ads (none vs shown). Mechanical Engineering Toolkit's advantage is update cadence (weekly vs every 2 months). On price, rating, device support and iOS requirement there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Converter against 4.8 for Mechanical Engineering Toolkit. That said, the two scores are not equally well evidenced: Converter has 897 ratings behind it against 64, so its average is the more settled of the two. Written reviews are what separate them: 96% of Converter's written reviews are positive against 57% of Mechanical Engineering Toolkit's.

Converter ships an update every 2 months, Mechanical Engineering Toolkit weekly. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Converter | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (897 ratings)](https://appshunter.io/ios/app/converter-universal-conversion/id423521445/reviews)** | [4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews) |
| Number of ratings | **897** | 64 |
| Positive reviews | **96.0% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 37 MB | 40 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### Converter

[App page](https://appshunter.io/ios/app/converter-universal-conversion/id423521445)

This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.

**Highlights:** Currency converter with live exchange rates, Over 300 engineering and scientific units, Specialized hardness converter, Timezone conversion, Running pace calculator, Integrated standard calculator, Conversion history log

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate and fast conversions
- 💡 Comprehensive coverage of units and categories
- 🔒 No ads or hidden fees
- 💡 Useful currency converter

**What reviewers complain about**

- 🐛 Currency conversion rates can be outdated
- 🔍 Difficult to find specific conversions due to large number of options
- 💡 Lack of ability to set favorite conversions as default

**Reported bugs**

- Occasional crashes on startup for non-English/German users
- Conversion from meters to feet does not show inches

**Requested features**

- Add fuel efficiency conversions
- Allow users to set favorite conversions as default
- Improve currency conversion rate updates


### 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 Converter free?

Converter 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.

### Which has better reviews, Converter or Mechanical Engineering Toolkit?

Converter is rated higher. Converter averages 4.9 out of 5 from 897 ratings, while Mechanical Engineering Toolkit averages 4.8 from 64 ratings.

### Do Converter or Mechanical Engineering Toolkit have ads?

Mechanical Engineering Toolkit shows ads; Converter does not.

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

Converter ships an update every 2 months, and Mechanical Engineering Toolkit weekly. Most recently, Converter was updated on October 11, 2026 and Mechanical Engineering Toolkit on October 10, 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.*