# MonsterMailbox vs API Matrix

The clearest difference is device support: MonsterMailbox at 3 against API Matrix's 1. MonsterMailbox also leads on iOS requirement (13.0 vs 16.4). On price, ads and in-app purchases 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 | MonsterMailbox | API Matrix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 20 MB | 50 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [All In Networks](https://appshunter.io/developer/459284427) | [Chi Hin Lio](https://appshunter.io/developer/1896516878) |

## What reviewers say

### MonsterMailbox

[App page](https://appshunter.io/ios/app/monstermailbox/id6772627113)

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

**In-app purchases:** none


### API Matrix

[App page](https://appshunter.io/ios/app/api-matrix/id6779679646)

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

**In-app purchases:** none


## Frequently asked questions

### Is MonsterMailbox free?

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

### Is API Matrix free?

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

### Do MonsterMailbox or API Matrix have ads?

Neither MonsterMailbox nor API Matrix shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*