# Unit Converter Engineering Pro vs Enginamatic

The clearest difference is ads: Unit Converter Engineering Pro at none against Enginamatic's shown. Unit Converter Engineering Pro also leads on iOS requirement (13.0 vs 17.0). Enginamatic's advantage is update cadence (every 2 days vs weekly). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Unit Converter Engineering Pro sells 2 in-app purchases, starting at $5.99 per 7 days and Enginamatic sells 10 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Unit Converter Engineering Pro ships an update weekly, Enginamatic every 2 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Unit Converter Engineering Pro | Enginamatic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/unit-converter-engineering-pro/id6757166485/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 145 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Kaiguri Tech](https://appshunter.io/developer/1864995084) | [EGEROBOT OTOMASYON MUHENDISLIK PROJE DANISMANLIK SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/6785977346) |

## What reviewers say

### 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 |


### Enginamatic

[App page](https://appshunter.io/ios/app/enginamatic-mechanical-calc/id6806188820)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Enginamatic Premium Monthly | $3.99 | per month |
| Enginamatic Premium 3 Months | $8.99 | per 3 months |
| Enginamatic Premium Yearly | $26.99 | per year |
| Buy us a coffee | $4.99 | one-time |
| Buy us a cake | $9.99 | one-time |
| Enginamatic Plus Lifetime | $19.99 | one-time |
| Buy us a meal | $19.99 | one-time |
| Enginamatic Gold Lifetime | $29.99 | one-time |
| Enginamatic Premium Lifetime | $49.99 | one-time |
| Treat us to a feast | $49.99 | one-time |


## Frequently asked questions

### Is Unit Converter Engineering Pro free?

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

### Is Enginamatic free?

Enginamatic is free to download, with in-app purchases available.

### Do Unit Converter Engineering Pro or Enginamatic have ads?

Enginamatic shows ads; Unit Converter Engineering Pro does not.

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

Unit Converter Engineering Pro ships an update weekly, and Enginamatic every 2 days. Most recently, Unit Converter Engineering Pro was updated on October 24, 2026 and Enginamatic on October 29, 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.*