# Chess Notation Lab Pro vs zenchess

The clearest difference is price: zenchess at Free against Chess Notation Lab Pro's $9.99. zenchess also leads on iOS requirement (15.0 vs 18.6). Chess Notation Lab Pro's advantage is in-app purchases (none vs 4). On review sentiment, update cadence, ads and device support there is nothing between them.

zenchess is free to download; Chess Notation Lab Pro costs $9.99 up front. zenchess sells 3 in-app purchases, starting at $4.99 per month. Chess Notation Lab Pro asks for nothing beyond the download.

Chess Notation Lab Pro ships an update weekly, zenchess every 5 days. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Chess Notation Lab Pro | zenchess |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Paid | **Freemium** |
| Size | 25 MB | 106 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nishat Majid](https://appshunter.io/developer/1727207034) | [ata kaan bulut](https://appshunter.io/developer/1794755615) |

## What reviewers say

### Chess Notation Lab Pro

[App page](https://appshunter.io/ios/app/chess-notation-lab-pro/id6483938642)

Master chess board coordinates and piece movement with interactive training modes. Improve your ability to visualize moves, read notation, and speed up calculations for a stronger game.

**Highlights:** Identify squares by coordinate, Visualize piece movement, Translate moves to notation, Identify square color, Two training modes, Untimed practice mode, Global leaderboards

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

**In-app purchases:** none


### zenchess

[App page](https://appshunter.io/ios/app/zenchess-ai-chess-trainer/id6741918974)

Enhance your chess skills with puzzles, visualization exercises, and tactical training. Practice blindfold chess, analyze your games, and track your progress with personalized coaching. Offers offline play and integration with online chess accounts.

**Highlights:** Blindfold puzzles and visualization, Tactical puzzle modes (Classic, Blink, Glyph), Daily challenges with leaderboards, Online chess account integration, Targeted training games (Coordinates, Memory), Opening study and analysis, Personalized coaching and analytics

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Annual Subscription | $29.99 | per year |
| Annual Subscription | $29.99 | per year |


## Frequently asked questions

### Is Chess Notation Lab Pro free?

Chess Notation Lab Pro costs $9.99, with no in-app purchases.

### Is zenchess free?

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

### Do Chess Notation Lab Pro or zenchess have ads?

Neither Chess Notation Lab Pro nor zenchess shows ads.

### Which is updated more often, Chess Notation Lab Pro or zenchess?

Chess Notation Lab Pro ships an update weekly, and zenchess every 5 days. Most recently, Chess Notation Lab Pro was updated on September 7, 2026 and zenchess on September 14, 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.*