# Unit Converter For Engineers vs Unit Converter Engineering Pro

The clearest difference is ratings volume: Unit Converter For Engineers at 3 against Unit Converter Engineering Pro's 1. Unit Converter Engineering Pro's advantage is iOS requirement (13.0 vs 16.2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Unit Converter For Engineers sells 2 in-app purchases, starting at $9.99 per year and Unit Converter Engineering Pro sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Unit Converter For Engineers against 5.0 for Unit Converter Engineering Pro. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Unit Converter For Engineers ships an update every 9 days, Unit Converter Engineering Pro weekly. The most recent releases landed on October 2, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Unit Converter For Engineers | Unit Converter Engineering Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/unit-converter-for-engineers/id6752224915/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-engineering-pro/id6757166485/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 5 MB | 77 MB |
| Requires iOS | 16.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Amanuel Abebaw](https://appshunter.io/developer/1766393564) | [Kaiguri Tech](https://appshunter.io/developer/1864995084) |

## What reviewers say

### Unit Converter For Engineers

[App page](https://appshunter.io/ios/app/unit-converter-for-engineers/id6752224915)

This app provides a comprehensive unit conversion tool specifically designed for engineers, offering specialized units not found in standard converters. It features offline functionality, fast search, and a clean interface, replacing the need for multiple reference materials.

**Highlights:** Specialized engineering units, Offline functionality, Fast search and instant conversion, Fraction input mode, Ad-free interface, Scientific notation support

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $9.99 | per year |
| Lifetime Access | $29.99 | one-time |


### Unit Converter Engineering Pro

[App page](https://appshunter.io/ios/app/unit-converter-engineering-pro/id6757166485)

This app provides precise unit conversions for engineers, scientists, and students. It supports over 100 units across 35 categories, including scientific notation and 9-digit decimal precision. The tool works offline and adheres to SI, NIST, and ISO standards.

**Highlights:** Over 100 units in 35+ categories, Scientific notation support, 9-digit decimal precision, SI, NIST, ISO compliant, Offline functionality, Specialized units included

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | $5.99 | per 7 days |
| Yearly Plan | $19.99 | per year |


## Frequently asked questions

### Is Unit Converter For Engineers free?

Unit Converter For Engineers is free to download, with in-app purchases available.

### Is Unit Converter Engineering Pro free?

Unit Converter Engineering Pro is free to download, with in-app purchases available.

### Which has better reviews, Unit Converter For Engineers or Unit Converter Engineering Pro?

Unit Converter For Engineers and Unit Converter Engineering Pro are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Unit Converter For Engineers or Unit Converter Engineering Pro have ads?

Neither Unit Converter For Engineers nor Unit Converter Engineering Pro shows ads.

### Which is updated more often, Unit Converter For Engineers or Unit Converter Engineering Pro?

Unit Converter For Engineers ships an update every 9 days, and Unit Converter Engineering Pro weekly. Most recently, Unit Converter For Engineers was updated on October 2, 2026 and Unit Converter Engineering Pro on October 19, 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.*