# BookMoves vs Singularity Hub

The clearest difference is review sentiment: Singularity Hub at 100% against BookMoves's 50%. BookMoves's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). 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.

BookMoves ships an update every 3 weeks, Singularity Hub every 4 weeks. The most recent releases landed on June 4, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | BookMoves | Singularity Hub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/bookmoves/id6469711333/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 70 MB | 48 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Regulus Team s.r.o.](https://appshunter.io/developer/1563166617) | [AGATON LIMITED](https://appshunter.io/developer/1602348451) |

## What reviewers say

### 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


### Singularity Hub

[App page](https://appshunter.io/ios/app/singularity-hub/id6479359462)

Enhance your English skills with personalized word study and spaced repetition. This app uses modern algorithms and interactive lessons to help you memorize vocabulary effectively and become a confident speaker.

**Highlights:** Personalized word study, Spaced repetition algorithm, Interactive lessons, Vocabulary expansion, Anytime access

**In-app purchases:** none


## Frequently asked questions

### Is BookMoves free?

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

### Is Singularity Hub free?

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

### Do BookMoves or Singularity Hub have ads?

Neither BookMoves nor Singularity Hub shows ads.

### Which is updated more often, BookMoves or Singularity Hub?

BookMoves ships an update every 3 weeks, and Singularity Hub every 4 weeks. Most recently, BookMoves was updated on June 4, 2026 and Singularity Hub on September 10, 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.*