# mmmBook vs Cuby

The clearest difference is in-app purchases: mmmBook at none against Cuby's 2. mmmBook also leads on iOS requirement (12.4 vs 15.1). Cuby's advantage is update cadence (every 3 days vs every 9 days). On price, ads and device support there is nothing between them.

Both are free to download. Cuby sells 2 in-app purchases, starting at $3.99 per month. mmmBook asks for nothing beyond the download.

mmmBook ships an update every 9 days, Cuby every 3 days. The most recent releases landed on September 27, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | mmmBook | Cuby |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Size | 24 MB | 49 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [mmmEat](https://appshunter.io/developer/1643696843) | [Arthur Mascot](https://appshunter.io/developer/6775560344) |

## What reviewers say

### mmmBook

[App page](https://appshunter.io/ios/app/mmmbook/id1643696841)

**In-app purchases:** none


### Cuby

[App page](https://appshunter.io/ios/app/cuby/id6775560342)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cuby | $3.99 | per month |
| Cuby | $34.99 | per year |


## Frequently asked questions

### Is mmmBook free?

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

### Is Cuby free?

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

### Do mmmBook or Cuby have ads?

Neither mmmBook nor Cuby shows ads.

### Which is updated more often, mmmBook or Cuby?

mmmBook ships an update every 9 days, and Cuby every 3 days. Most recently, mmmBook was updated on September 27, 2026 and Cuby on September 18, 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.*