# MainOrNot vs MonsterMailbox

The clearest difference is iOS requirement: MonsterMailbox at 13.0 against MainOrNot'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 | MainOrNot | MonsterMailbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mainornot/id6752519866/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 7 MB | 20 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joey Barbier](https://appshunter.io/developer/568751299) | [All In Networks](https://appshunter.io/developer/459284427) |

## What reviewers say

### MainOrNot

[App page](https://appshunter.io/ios/app/mainornot/id6752519866)

An interactive platform to master modern Swift concurrency concepts. Explore async/await, actors, and structured concurrency with real-time code execution and thread visualization. Learn by doing with hands-on examples.

**Highlights:** Real-time code execution, Thread visualization, Interactive examples, Complete concurrency coverage, Swift 6 ready features, Localized in 6 languages

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

**In-app purchases:** none


### MonsterMailbox

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

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

**In-app purchases:** none


## Frequently asked questions

### Is MainOrNot free?

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

### Is MonsterMailbox free?

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

### Do MainOrNot or MonsterMailbox have ads?

Neither MainOrNot nor MonsterMailbox 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.*