# SumoChess vs Blindfold Chess Trainer

The clearest difference is in-app purchases: SumoChess at none against Blindfold Chess Trainer's 6. SumoChess also leads on ads (none vs shown). Blindfold Chess Trainer's advantage is update cadence (every 2 weeks vs every 13 months). On price, device support and iOS requirement there is nothing between them.

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

SumoChess ships an update every 13 months, Blindfold Chess Trainer every 2 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SumoChess | Blindfold Chess Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/blindfold-chess-trainer/id6745624258/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 153 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [AnnapurnApp Technologies UG haftungsbeschrankt](https://appshunter.io/developer/1227854970) | [Dawid Wrzesinski](https://appshunter.io/developer/1812701337) |

## What reviewers say

### SumoChess

[App page](https://appshunter.io/ios/app/sumochess-chess-variant/id6504040225)

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

**In-app purchases:** none


### Blindfold Chess Trainer

[App page](https://appshunter.io/ios/app/blindfold-chess-trainer/id6745624258)

Sharpen your chess visualization and calculation skills without seeing the board. This app offers puzzles, AI challenges, and square mastery to improve your game. It's designed for players of all levels to enhance their internal board representation.

**Highlights:** Master all 64 squares, Train piece movement patterns, 5,000+ blindfold puzzles, Play vs Stockfish AI, Voice mode for hands-free moves, 100% offline play

**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 | $8.99 | per 6 months |
| Espresso | $3.99 | one-time |
| Flat White | $6.99 | one-time |
| Latte | $9.99 | one-time |


## Frequently asked questions

### Is SumoChess free?

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

### Is Blindfold Chess Trainer free?

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

### Do SumoChess or Blindfold Chess Trainer have ads?

Blindfold Chess Trainer shows ads; SumoChess does not.

### Which is updated more often, SumoChess or Blindfold Chess Trainer?

SumoChess ships an update every 13 months, and Blindfold Chess Trainer every 2 weeks. Most recently, SumoChess was updated on November 4, 2026 and Blindfold Chess Trainer on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*