# Critterbook vs Notes Practice

The clearest difference is update cadence: Notes Practice at every 5 days against Critterbook's every 3 weeks. 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.

Critterbook ships an update every 3 weeks, Notes Practice every 5 days. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Critterbook | Notes Practice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 257 MB | 7 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Altai Ventures LLC](https://appshunter.io/developer/1879129387) | [Iwan Hoogendoorn](https://appshunter.io/developer/6792300078) |

## What reviewers say

### Critterbook

[App page](https://appshunter.io/ios/app/critterbook/id6790105777)

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

**In-app purchases:** none


### Notes Practice

[App page](https://appshunter.io/ios/app/notes-practice/id6796797469)

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

**In-app purchases:** none


## Frequently asked questions

### Is Critterbook free?

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

### Is Notes Practice free?

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

### Do Critterbook or Notes Practice have ads?

Neither Critterbook nor Notes Practice shows ads.

### Which is updated more often, Critterbook or Notes Practice?

Critterbook ships an update every 3 weeks, and Notes Practice every 5 days. Most recently, Critterbook was updated on October 14, 2026 and Notes Practice on October 16, 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.*