# whBOOK vs Euulo

The clearest difference is iOS requirement: Euulo at 13.0 against whBOOK's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

whBOOK ships an update every 5 weeks, Euulo every 6 weeks. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | whBOOK | Euulo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Size | 7 MB | 31 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [w+h GmbH](https://appshunter.io/developer/1142977449) | [Creative Q Limited](https://appshunter.io/developer/1098278029) |

## What reviewers say

### whBOOK

[App page](https://appshunter.io/ios/app/whbook/id1340317105)

**Features:** macOS Compatibility

**In-app purchases:** none


### Euulo

[App page](https://appshunter.io/ios/app/euulo/id6444091863)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is whBOOK free?

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

### Is Euulo free?

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

### Do whBOOK or Euulo have ads?

Neither whBOOK nor Euulo shows ads.

### Which is updated more often, whBOOK or Euulo?

whBOOK ships an update every 5 weeks, and Euulo every 6 weeks. Most recently, whBOOK was updated on September 14, 2026 and Euulo on September 17, 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.*