# Chessvision.ai eBook Reader vs GPS Flow

The clearest difference is in-app purchases: GPS Flow at none against Chessvision.ai eBook Reader's 2. Chessvision.ai eBook Reader's advantage is device support (3 vs 1) and iOS requirement (13.4 vs 18.2). On price, update cadence and ads there is nothing between them.

Both are free to download. Chessvision.ai eBook Reader sells 2 in-app purchases, starting at $6.99 per month. GPS Flow asks for nothing beyond the download.

Chessvision.ai eBook Reader ships an update monthly, GPS Flow every 2 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Chessvision.ai eBook Reader | GPS Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/chessvisionai-ebook-reader/id6599857782/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 47 MB | 27 MB |
| Requires iOS | **13.4** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pawel Kacprzak](https://appshunter.io/developer/1574933455) | [Sirisha Dhulipala](https://appshunter.io/developer/1853600995) |

## What reviewers say

### Chessvision.ai eBook Reader

[App page](https://appshunter.io/ios/app/chessvisionai-ebook-reader/id6599857782)

Transform chess eBooks into interactive learning tools. Instantly view board setups from diagrams with a double-tap. Organize your library, analyze positions with engines, and create study sheets.

**Highlights:** Interactive diagram analysis, Organize chess eBooks, Analyze with chess engines, Create PDF study sheets, Export to PGN, Search and filter diagrams, Discover related resources

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chessvision.ai eBook Reader | $6.99 | per month |
| Chessvision.ai eBook Reader | $49.99 | per year |


### GPS Flow

[App page](https://appshunter.io/ios/app/gps-flow/id6755392510)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chessvision.ai eBook Reader free?

Chessvision.ai eBook Reader is free to download, with in-app purchases available.

### Is GPS Flow free?

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

### Do Chessvision.ai eBook Reader or GPS Flow have ads?

Neither Chessvision.ai eBook Reader nor GPS Flow shows ads.

### Which is updated more often, Chessvision.ai eBook Reader or GPS Flow?

Chessvision.ai eBook Reader ships an update monthly, and GPS Flow every 2 months. Most recently, Chessvision.ai eBook Reader was updated on October 12, 2026 and GPS Flow on October 2, 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.*