# Units+ Converter vs PrefixCalc

The clearest difference is in-app purchases: PrefixCalc at none against Units+ Converter's 1. PrefixCalc also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Units+ Converter | PrefixCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Size | 33 MB | 28 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Iqra Hasan](https://appshunter.io/developer/1689143353) | [YONAGARE LAB](https://appshunter.io/developer/1810986554) |

## What reviewers say

### Units+ Converter

[App page](https://appshunter.io/ios/app/units-plus-converter-all-units/id6739848583)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Units+ Converter Pro | $5.99 | one-time |


### PrefixCalc

[App page](https://appshunter.io/ios/app/prefixcalc/id6748650037)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Units+ Converter free?

Units+ Converter is free to download, with in-app purchases available.

### Is PrefixCalc free?

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

### Do Units+ Converter or PrefixCalc have ads?

Units+ Converter shows ads; PrefixCalc does not.

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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.*