# Chess 3D Pro Trainer vs Chess Lab

The clearest difference is in-app purchases: Chess 3D Pro Trainer at none against Chess Lab's 1. Chess 3D Pro Trainer also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chess Lab sells 1 one-off in-app purchase. Chess 3D Pro Trainer asks for nothing beyond the download.

Chess 3D Pro Trainer ships an update every 5 days, Chess Lab every 6 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Chess 3D Pro Trainer | Chess Lab |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | — | Free with in-app purchases |
| Size | 43 MB | 61 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [famobi](https://appshunter.io/developer/933760663) | [koji ozono](https://appshunter.io/developer/1826482515) |

## What reviewers say

### Chess 3D Pro Trainer

[App page](https://appshunter.io/ios/app/chess-3d-pro-trainer/id6740913562)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chess Lab

[App page](https://appshunter.io/ios/app/chess-lab-arasan-ai-engine/id6757245101)

Analyze chess games with a powerful AI engine, practice against 30 difficulty levels, or watch live top-tier matches. Save and replay games, import PGNs, and customize your board view for a premium experience.

**Highlights:** AI-powered game analysis, 30 difficulty levels for CPU play, Local 2-player mode, Lichess spectating with channel selection, Save and replay games, PGN import, Customizable 2D/2.5D board views

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chess Lab Pro | $0.99 | one-time |


## Frequently asked questions

### Is Chess 3D Pro Trainer free?

Chess 3D Pro Trainer is free to download, with no in-app purchases.

### Is Chess Lab free?

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

### Do Chess 3D Pro Trainer or Chess Lab have ads?

Both Chess 3D Pro Trainer and Chess Lab show ads.

### Which is updated more often, Chess 3D Pro Trainer or Chess Lab?

Chess 3D Pro Trainer ships an update every 5 days, and Chess Lab every 6 days. Most recently, Chess 3D Pro Trainer was updated on October 25, 2026 and Chess Lab on October 31, 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.*