# API Usage vs OpenASO

The clearest difference is iOS requirement: OpenASO at 16.4 against API Usage's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | API Usage | OpenASO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 5 MB | 49 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Barolo AI](https://appshunter.io/developer/1896727788) | [Que Anh Bui Nguyen](https://appshunter.io/developer/6794007553) |

## What reviewers say

### API Usage

[App page](https://appshunter.io/ios/app/api-usage/id6770253168)

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

**In-app purchases:** none


### OpenASO

[App page](https://appshunter.io/ios/app/openaso/id6794007551)

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

**In-app purchases:** none


## Frequently asked questions

### Is API Usage free?

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

### Is OpenASO free?

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

### Do API Usage or OpenASO have ads?

Neither API Usage nor OpenASO shows 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.*