# Muse vs aira

The clearest difference is in-app purchases: aira at none against Muse's 3. Muse's advantage is update cadence (every 2 days vs every 2 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Muse sells 3 in-app purchases, starting at $9.99 per month. aira asks for nothing beyond the download.

Muse ships an update every 2 days, aira every 2 weeks. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Muse | aira |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 189 MB | 56 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Bypass.inc](https://appshunter.io/developer/1677454637) | [John Lim](https://appshunter.io/developer/1886852946) |

## What reviewers say

### Muse

[App page](https://appshunter.io/ios/app/muse-your-inner-guide/id6757005449)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Muse Lite Monthly | $9.99 | per month |
| Muse Standard Monthly | $19.99 | per month |
| Muse Premium Monthly | $99.99 | per month |


### aira

[App page](https://appshunter.io/ios/app/aira-private-second-brain/id6760924946)

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

**In-app purchases:** none


## Frequently asked questions

### Is Muse free?

Muse is free to download, with in-app purchases available.

### Is aira free?

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

### Do Muse or aira have ads?

Neither Muse nor aira shows ads.

### Which is updated more often, Muse or aira?

Muse ships an update every 2 days, and aira every 2 weeks. Most recently, Muse was updated on October 5, 2026 and aira on October 13, 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.*