# Board Brain vs Cogs Words

The clearest difference is in-app purchases: Board Brain at none against Cogs Words's 1. Board Brain also leads on ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Cogs Words sells 1 one-off in-app purchase. Board Brain asks for nothing beyond the download.

Board Brain ships an update every 6 days, Cogs Words every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Board Brain | Cogs Words |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/board-brain/id6482852806/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 2 MB | 73 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Selvarajan Thangavel](https://appshunter.io/developer/1482739883) | [Huy Huynh](https://appshunter.io/developer/1815003126) |

## What reviewers say

### Board Brain

[App page](https://appshunter.io/ios/app/board-brain/id6482852806)

This app helps chess players of all levels enhance their skills through interactive games and exercises. It focuses on mastering chessboard coordinates, understanding piece movements, and recognizing square colors to improve overall game vision.

**Highlights:** Interactive games, Skill-building exercises, Chessboard coordinate mastery, Piece movement understanding, Square color recognition

**Features:** macOS Compatibility

**In-app purchases:** none


### Cogs Words

[App page](https://appshunter.io/ios/app/cogs-words-letter-gears/id6759633643)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |


## Frequently asked questions

### Is Board Brain free?

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

### Is Cogs Words free?

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

### Do Board Brain or Cogs Words have ads?

Cogs Words shows ads; Board Brain does not.

### Which is updated more often, Board Brain or Cogs Words?

Board Brain ships an update every 6 days, and Cogs Words every 3 weeks. Most recently, Board Brain was updated on November 4, 2026 and Cogs Words 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.*