# Chessvision.ai eBook Reader vs logcal

The clearest difference is price: Chessvision.ai eBook Reader at Free against logcal's $0.99. Chessvision.ai eBook Reader also leads on device support (3 vs 1) and iOS requirement (13.4 vs 16.4). logcal's advantage is in-app purchases (none vs 2) and update cadence (every 4 days vs monthly). On ratings volume and ads there is nothing between them.

Chessvision.ai eBook Reader is free to download; logcal costs $0.99 up front. Chessvision.ai eBook Reader sells 2 in-app purchases, starting at $6.99 per month. logcal asks for nothing beyond the download.

logcal holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

Chessvision.ai eBook Reader ships an update monthly, logcal every 4 days. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Chessvision.ai eBook Reader | logcal |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/chessvisionai-ebook-reader/id6599857782/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/logcal/id6742337830/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 47 MB | 37 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pawel Kacprzak](https://appshunter.io/developer/1574933455) | [Cyrus Freshman](https://appshunter.io/developer/1788046442) |

## 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 |


### logcal

[App page](https://appshunter.io/ios/app/logcal/id6742337830)

A personal journaling app designed for social sharing. Record your thoughts and experiences, and choose to share them with friends or keep them private. It offers a unique way to connect through shared memories.

**Highlights:** Social journaling, Private entries, Shared entries, Personal reflection, Memory sharing

**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 logcal free?

logcal costs $0.99, with no in-app purchases.

### Which has better reviews, Chessvision.ai eBook Reader or logcal?

logcal is rated higher. Chessvision.ai eBook Reader averages 4.6 out of 5 from 7 ratings, while logcal averages 5.0 from 3 ratings.

### Do Chessvision.ai eBook Reader or logcal have ads?

Neither Chessvision.ai eBook Reader nor logcal shows ads.

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

Chessvision.ai eBook Reader ships an update monthly, and logcal every 4 days. Most recently, Chessvision.ai eBook Reader was updated on October 12, 2026 and logcal on October 15, 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.*