# Chessbook PGN Library vs ChessGrind

The clearest difference is iOS requirement: Chessbook PGN Library at 18.0 against ChessGrind's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chessbook PGN Library sells 2 in-app purchases, starting at $9.99 per month and ChessGrind sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Chessbook PGN Library | ChessGrind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 4 MB | 2 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mitaanshu Agarwal](https://appshunter.io/developer/1896724075) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Chessbook PGN Library

[App page](https://appshunter.io/ios/app/chessbook-pgn-library/id6772632379)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chessbook Pro Monthly | $9.99 | per month |
| Chessbook Pro Yearly | $59.99 | per year |


### ChessGrind

[App page](https://appshunter.io/ios/app/chessgrind-study-planner/id6789848865)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChessGrind Pro | $3.99 | per month |
| ChessGrind Pro | $24.99 | per year |
| ChessGrind Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Chessbook PGN Library free?

Chessbook PGN Library is free to download, with in-app purchases available.

### Is ChessGrind free?

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

### Do Chessbook PGN Library or ChessGrind have ads?

Neither Chessbook PGN Library nor ChessGrind shows ads.

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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.*