# Chessvision.ai eBook Reader vs 团队涡轮

The clearest difference is in-app purchases: 团队涡轮 at none against Chessvision.ai eBook Reader's 2. 团队涡轮 also leads on update cadence (every 11 days vs monthly). Chessvision.ai eBook Reader's advantage is device support (3 vs 1) and iOS requirement (13.4 vs 16.0). On price 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. 团队涡轮 asks for nothing beyond the download.

Chessvision.ai eBook Reader ships an update monthly, 团队涡轮 every 11 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Chessvision.ai eBook Reader | 团队涡轮 |
| --- | --- | --- |
| 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 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 47 MB | 29 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pawel Kacprzak](https://appshunter.io/developer/1574933455) | [RaiseThink](https://appshunter.io/developer/1096004704) |

## 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 |


### 团队涡轮

[App page](https://appshunter.io/ios/app/id6739824128)

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

**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 团队涡轮 free?

团队涡轮 is free to download, with no in-app purchases.

### Do Chessvision.ai eBook Reader or 团队涡轮 have ads?

Neither Chessvision.ai eBook Reader nor 团队涡轮 shows ads.

### Which is updated more often, Chessvision.ai eBook Reader or 团队涡轮?

Chessvision.ai eBook Reader ships an update monthly, and 团队涡轮 every 11 days. Most recently, Chessvision.ai eBook Reader was updated on October 24, 2026 and 团队涡轮 on October 18, 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.*