# Chess Opening Blunders vs Sudoku Puzzles Game Fun

The clearest difference is price: Chess Opening Blunders at Free against Sudoku Puzzles Game Fun's $1.99. Chess Opening Blunders also leads on update cadence (every 2 months vs every 12 months) and iOS requirement (8.0 vs 12.0). Sudoku Puzzles Game Fun's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Chess Opening Blunders is free to download; Sudoku Puzzles Game Fun costs $1.99 up front. Chess Opening Blunders sells 1 one-off in-app purchase. Sudoku Puzzles Game Fun asks for nothing beyond the download.

Chess Opening Blunders ships an update every 2 months, Sudoku Puzzles Game Fun every 12 months. The most recent releases landed on September 25, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Chess Opening Blunders | Sudoku Puzzles Game Fun |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.7 (246 ratings)](https://appshunter.io/ios/app/chess-opening-blunders/id1129867864/reviews)** | — |
| Number of ratings | **246** | — |
| Positive reviews | 84.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 12 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chess King](https://appshunter.io/developer/1096660597) | [DigiGalaxy](https://appshunter.io/developer/1470420175) |

## What reviewers say

### Chess Opening Blunders

[App page](https://appshunter.io/ios/app/chess-opening-blunders/id1129867864)

Learn chess by studying common opening mistakes and traps. This app offers interactive lessons with over 1,250 exercises across more than 40 openings, acting as a personal coach to guide you through challenges.

**Highlights:** Learn opening mistakes and traps, Over 1,250 instructive exercises, Covers more than 40 chess openings, Interactive lessons with hints and explanations, Play positions against the computer, Monitors player rating (ELO)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full course | $12.99 | one-time |


### Sudoku Puzzles Game Fun

[App page](https://appshunter.io/ios/app/sudoku-puzzles-game-fun/id1474482540)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chess Opening Blunders free?

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

### Is Sudoku Puzzles Game Fun free?

Sudoku Puzzles Game Fun costs $1.99, with no in-app purchases.

### Do Chess Opening Blunders or Sudoku Puzzles Game Fun have ads?

Neither Chess Opening Blunders nor Sudoku Puzzles Game Fun shows ads.

### Which is updated more often, Chess Opening Blunders or Sudoku Puzzles Game Fun?

Chess Opening Blunders ships an update every 2 months, and Sudoku Puzzles Game Fun every 12 months. Most recently, Chess Opening Blunders was updated on September 25, 2026 and Sudoku Puzzles Game Fun on September 19, 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.*