# Occluder vs Interactive Chess Books

The clearest difference is price: Interactive Chess Books at Free against Occluder's $0.99. Interactive Chess Books also leads on update cadence (every 4 months vs every 51 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Interactive Chess Books is free to download; Occluder costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Occluder ships an update every 51 months, Interactive Chess Books every 4 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | Occluder | Interactive Chess Books |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/interactive-chess-books/id1645731412/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 51 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 2 MB | 34 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Cabezon Orjales](https://appshunter.io/developer/347664743) | [Eric Tangborn](https://appshunter.io/developer/1645731414) |

## What reviewers say

### Occluder

[App page](https://appshunter.io/ios/app/occluder/id1116490982)

**Features:** macOS Compatibility

**In-app purchases:** none


### Interactive Chess Books

[App page](https://appshunter.io/ios/app/interactive-chess-books/id1645731412)

This app offers interactive lessons, tutorials, and practice exercises to help beginners and intermediate players improve their chess skills. It features a user-friendly interface with clear instructions, helpful tips, and engaging challenges to make learning fun and effective.

**Highlights:** Interactive lessons, Tutorials, Practice exercises, User-friendly interface, Helpful tips and tricks, Engaging challenges and quizzes

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

**In-app purchases:** none


## Frequently asked questions

### Is Occluder free?

Occluder costs $0.99, with no in-app purchases.

### Is Interactive Chess Books free?

Interactive Chess Books is free to download, with no in-app purchases.

### Do Occluder or Interactive Chess Books have ads?

Neither Occluder nor Interactive Chess Books shows ads.

### Which is updated more often, Occluder or Interactive Chess Books?

Occluder ships an update every 51 months, and Interactive Chess Books every 4 months. Most recently, Occluder was updated on October 7, 2026 and Interactive Chess Books on October 7, 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.*