# Book Summary vs ChessFan

The clearest difference is iOS requirement: Book Summary at 12.0 against ChessFan's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Book Summary sells 2 in-app purchases, starting at $9.00 per month and ChessFan sells 6 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Book Summary ships an update weekly, ChessFan every 4 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Book Summary | ChessFan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Size | 90 MB | 125 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Phan Tai Phuong](https://appshunter.io/developer/952621043) | [丽娟 刘](https://appshunter.io/developer/979088935) |

## What reviewers say

### Book Summary

[App page](https://appshunter.io/ios/app/book-summary-nine-language/id6450974180)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $9.00 | per month |
| Yearly Premium | $59.00 | per year |


### ChessFan

[App page](https://appshunter.io/ios/app/chessfan-notation-and-pdf/id6761381966)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $3.99 | per month |
| Pro Monthly | $4.99 | per month |
| Coach Monthly | $5.99 | per month |
| Basic Yearly | $39.99 | per year |
| Pro Yearly | $49.99 | per year |
| Coach Yearly | $59.99 | per year |


## Frequently asked questions

### Is Book Summary free?

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

### Is ChessFan free?

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

### Do Book Summary or ChessFan have ads?

Neither Book Summary nor ChessFan shows ads.

### Which is updated more often, Book Summary or ChessFan?

Book Summary ships an update weekly, and ChessFan every 4 days. Most recently, Book Summary was updated on November 3, 2026 and ChessFan on November 3, 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.*