# Open Book vs WorldChips

The clearest difference is in-app purchases: WorldChips at none against Open Book's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Open Book sells 2 in-app purchases, starting at $9.99 per month. WorldChips asks for nothing beyond the download.

Open Book ships an update every 3 days, WorldChips every 4 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | Open Book | WorldChips |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 10 MB | 12 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Reno Labs, LLC](https://appshunter.io/developer/1860024715) | [Gerard Pons Mas](https://appshunter.io/developer/1824979542) |

## What reviewers say

### Open Book

[App page](https://appshunter.io/ios/app/open-book-content-blocker/id6792210520)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Open Book Monthly | $9.99 | per month |
| Open Book Annual | $59.99 | per year |


### WorldChips

[App page](https://appshunter.io/ios/app/worldchips/id6797018188)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Open Book free?

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

### Is WorldChips free?

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

### Do Open Book or WorldChips have ads?

Neither Open Book nor WorldChips shows ads.

### Which is updated more often, Open Book or WorldChips?

Open Book ships an update every 3 days, and WorldChips every 4 days. Most recently, Open Book was updated on October 29, 2026 and WorldChips on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*