# API Usage vs Pi Dev Mobile

API Usage and Pi Dev Mobile are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | API Usage | Pi Dev Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 5 MB | 11 MB |
| Requires iOS | **26.0** | 26.1 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Barolo AI](https://appshunter.io/developer/1896727788) | [Om More](https://appshunter.io/developer/1864525184) |

## 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


### Pi Dev Mobile

[App page](https://appshunter.io/ios/app/pi-dev-mobile/id6789149807)

**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 Pi Dev Mobile free?

Pi Dev Mobile is free to download, with no in-app purchases.

### Do API Usage or Pi Dev Mobile have ads?

Neither API Usage nor Pi Dev Mobile 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.*