# Expain vs Mu.

The clearest difference is update cadence: Mu. at every 10 days against Expain's every 5 months. Expain's advantage is iOS requirement (8.1 vs 18.6). 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.

Expain ships an update every 5 months, Mu. every 10 days. The most recent releases landed on November 11, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Expain | Mu. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 10 days** |
| Size | 64 MB | 34 MB |
| Requires iOS | **8.1** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 12+ |
| Developer | [Expain AS](https://appshunter.io/developer/1159660977) | [Liminal Pictures](https://appshunter.io/developer/1895974335) |

## What reviewers say

### Expain

[App page](https://appshunter.io/ios/app/expain/id1159660978)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mu.

[App page](https://appshunter.io/ios/app/mu/id6766069551)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Expain free?

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

### Is Mu. free?

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

### Do Expain or Mu. have ads?

Neither Expain nor Mu. shows ads.

### Which is updated more often, Expain or Mu.?

Expain ships an update every 5 months, and Mu. every 10 days. Most recently, Expain was updated on November 11, 2026 and Mu. on November 9, 2026.

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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.*