# Unit Convert vs Big Brain Conversions

The clearest difference is in-app purchases: Big Brain Conversions at none against Unit Convert's 1. Big Brain Conversions also leads on iOS requirement (13.0 vs 15.6). Unit Convert's advantage is device support. On price there is nothing between them.

Both are free to download. Unit Convert sells 1 one-off in-app purchase. Big Brain Conversions asks for nothing beyond the download.

## The numbers

| Metric | Unit Convert | Big Brain Conversions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (13 ratings)](https://appshunter.io/ios/app/unit-convert/id1590954132/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 3 MB | 26 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | — |
| Age rating | 4+ | 4+ |
| Developer | [River Right Ltd](https://appshunter.io/developer/1515869956) | [Bamboo Digital](https://appshunter.io/developer/1784310656) |

## What reviewers say

### Unit Convert

[App page](https://appshunter.io/ios/app/unit-convert/id1590954132)

This utility app offers seamless unit conversions without ads or accounts. It supports offline use, custom units, and precise fractional inch conversions, making it a powerful tool for everyday and professional needs.

**Highlights:** Ad-free and account-free operation, 100% offline functionality, Custom unit creation, Fractional inch conversion with selectable precision, Feet-inches to metric conversion, Integrated calculator for fractions, Live exchange rates (cached offline)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Exchange Rates | $0.99 | one-time |


### Big Brain Conversions

[App page](https://appshunter.io/ios/app/big-brain-conversions/id6477713383)

**In-app purchases:** none


## Frequently asked questions

### Is Unit Convert free?

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

### Is Big Brain Conversions free?

Big Brain Conversions is free to download, with no in-app purchases.

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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.*