# Units Calculator vs Convert Units Calculator

The clearest difference is in-app purchases: Units Calculator at none against Convert Units Calculator's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Convert Units Calculator sells 1 one-off in-app purchase. Units Calculator asks for nothing beyond the download.

## The numbers

| Metric | Units Calculator | Convert Units Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 2 months |
| Size | 6 MB | 49 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rakesh Bhadani](https://appshunter.io/developer/1647133078) | [Nelson Lai](https://appshunter.io/developer/1477911199) |

## What reviewers say

### Units Calculator

[App page](https://appshunter.io/ios/app/units-calculator/id6742182706)

**Features:** macOS Compatibility

**In-app purchases:** none


### Convert Units Calculator

[App page](https://appshunter.io/ios/app/convert-units-calculator/id6758808738)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Convert Pro | $3.99 | one-time |


## Frequently asked questions

### Is Units Calculator free?

Units Calculator is free to download, with no in-app purchases.

### Is Convert Units Calculator free?

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

### Do Units Calculator or Convert Units Calculator have ads?

Both Units Calculator and Convert Units Calculator show ads.

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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.*