# Occluder vs BookMoves

The clearest difference is price: BookMoves at Free against Occluder's $0.99. BookMoves also leads on update cadence (every 3 weeks vs every 51 months) and iOS requirement (13.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

BookMoves 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, BookMoves every 3 weeks. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Occluder | BookMoves |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/bookmoves/id6469711333/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 51 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 2 MB | 70 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Cabezon Orjales](https://appshunter.io/developer/347664743) | [Regulus Team s.r.o.](https://appshunter.io/developer/1563166617) |

## What reviewers say

### Occluder

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

**Features:** macOS Compatibility

**In-app purchases:** none


### BookMoves

[App page](https://appshunter.io/ios/app/bookmoves/id6469711333)

Master chess openings with a unique blend of theory, computer science, and spaced repetition. Memorize hundreds of variants for both sides and transition from rote learning to intuitive application. Overcome the forgetting curve with an innovative technique for lasting mastery.

**Highlights:** Chess opening theory, Spaced repetition learning, Hundreds of chess variants, Statistical probabilities, Integrated scoring system, Algorithmic improvement

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Occluder free?

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

### Is BookMoves free?

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

### Do Occluder or BookMoves have ads?

Neither Occluder nor BookMoves shows ads.

### Which is updated more often, Occluder or BookMoves?

Occluder ships an update every 51 months, and BookMoves every 3 weeks. Most recently, Occluder was updated on October 7, 2026 and BookMoves on October 1, 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.*