# Chess Defense Trainer vs OpenMate

The clearest difference is in-app purchases: OpenMate at none against Chess Defense Trainer's 6. OpenMate also leads on ads (none vs shown) and update cadence (every 6 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chess Defense Trainer sells 6 in-app purchases, starting at $2.99 per month. OpenMate asks for nothing beyond the download.

Chess Defense Trainer ships an update every 2 months, OpenMate every 6 days. The most recent releases landed on September 25, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Chess Defense Trainer | OpenMate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/openmate/id6760992582/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 117 MB | 20 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Dawid Wrzesinski](https://appshunter.io/developer/1812701337) | [RAMINE ROANE](https://appshunter.io/developer/1887179395) |

## What reviewers say

### Chess Defense Trainer

[App page](https://appshunter.io/ios/app/chess-defense-trainer/id6747926627)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Espresso Subscription | $2.99 | per month |
| Flat White Subscription | $5.99 | per 3 months |
| Latte Subscription | $7.99 | per 6 months |
| Espresso | $3.99 | one-time |
| Flat White | $6.99 | one-time |
| Latte | $9.99 | one-time |


### OpenMate

[App page](https://appshunter.io/ios/app/openmate/id6760992582)

Master chess openings and play against a powerful engine with integrated coaching. This app offers a private, offline experience with visual guidance and strategy tips to improve your game. Enjoy uninterrupted play with no ads or distractions.

**Highlights:** Strong, fast chess engine, Fully offline functionality, Visual coaching with move suggestions, Built-in opening knowledge, Strategy tips and explanations, Play at your own pace, no clock, Undo moves freely

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Chess Defense Trainer free?

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

### Is OpenMate free?

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

### Do Chess Defense Trainer or OpenMate have ads?

Chess Defense Trainer shows ads; OpenMate does not.

### Which is updated more often, Chess Defense Trainer or OpenMate?

Chess Defense Trainer ships an update every 2 months, and OpenMate every 6 days. Most recently, Chess Defense Trainer was updated on September 25, 2026 and OpenMate on September 26, 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.*