# Calvin Chess Trainer vs ChessFan

The clearest difference is in-app purchases: Calvin Chess Trainer at none against ChessFan's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ChessFan sells 6 in-app purchases, starting at $3.99 per month. Calvin Chess Trainer asks for nothing beyond the download.

Calvin Chess Trainer ships an update every 5 days, ChessFan every 4 days. Both last shipped on November 9, 2026.

## The numbers

| Metric | Calvin Chess Trainer | ChessFan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Size | 170 MB | 125 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DAVID MARKLE](https://appshunter.io/developer/1880745263) | [丽娟 刘](https://appshunter.io/developer/979088935) |

## What reviewers say

### Calvin Chess Trainer

[App page](https://appshunter.io/ios/app/calvin-chess-trainer/id6759800929)

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

**In-app purchases:** none


### 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 Calvin Chess Trainer free?

Calvin Chess Trainer is free to download, with no in-app purchases.

### Is ChessFan free?

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

### Do Calvin Chess Trainer or ChessFan have ads?

Neither Calvin Chess Trainer nor ChessFan shows ads.

### Which is updated more often, Calvin Chess Trainer or ChessFan?

Calvin Chess Trainer ships an update every 5 days, and ChessFan every 4 days. Most recently, Calvin Chess Trainer was updated on November 9, 2026 and ChessFan on November 9, 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.*