# BookMoves vs ChessMonitor

The clearest difference is in-app purchases: BookMoves at none against ChessMonitor's 2. BookMoves also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ChessMonitor sells 2 in-app purchases, starting at $7.99 per month. BookMoves asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on June 4, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | BookMoves | ChessMonitor |
| --- | --- | --- |
| 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 | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 70 MB | 117 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Regulus Team s.r.o.](https://appshunter.io/developer/1563166617) | [ChessMonitor UG (haftungsbeschrankt)](https://appshunter.io/developer/1855090221) |

## 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


### ChessMonitor

[App page](https://appshunter.io/ios/app/chessmonitor/id6755627535)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $7.99 | per month |
| Yearly | $79.99 | per year |


## Frequently asked questions

### Is BookMoves free?

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

### Is ChessMonitor free?

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

### Do BookMoves or ChessMonitor have ads?

Neither BookMoves nor ChessMonitor shows ads.

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

BookMoves ships an update every 3 weeks, and ChessMonitor every 3 weeks. Most recently, BookMoves was updated on June 4, 2026 and ChessMonitor on September 8, 2026.

---

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