# BookMoves vs FPVSIM

The clearest difference is price: BookMoves at Free against FPVSIM's $9.99. BookMoves also leads on update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

BookMoves is free to download; FPVSIM costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BookMoves ships an update every 3 weeks, FPVSIM every 4 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | BookMoves | FPVSIM |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| 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 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 70 MB | 73 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Regulus Team s.r.o.](https://appshunter.io/developer/1563166617) | [Jiahao Wang](https://appshunter.io/developer/1755770926) |

## 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


### FPVSIM

[App page](https://appshunter.io/ios/app/fpvsim-timer/id6514321806)

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

**In-app purchases:** none


## Frequently asked questions

### Is BookMoves free?

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

### Is FPVSIM free?

FPVSIM costs $9.99, with no in-app purchases.

### Do BookMoves or FPVSIM have ads?

Neither BookMoves nor FPVSIM shows ads.

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

BookMoves ships an update every 3 weeks, and FPVSIM every 4 months. Most recently, BookMoves was updated on October 1, 2026 and FPVSIM 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.*