# Chess Opening Blunders vs Blank Jigsaw Puzzle

The clearest difference is in-app purchases: Blank Jigsaw Puzzle at none against Chess Opening Blunders's 1. Blank Jigsaw Puzzle also leads on rating (5.0 vs 4.7) and update cadence (every 3 weeks vs every 2 months). Chess Opening Blunders's advantage is ads (none vs shown) and ratings volume (246 vs 4). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chess Opening Blunders sells 1 one-off in-app purchase. Blank Jigsaw Puzzle asks for nothing beyond the download.

Blank Jigsaw Puzzle holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Chess Opening Blunders has 246 ratings behind it against 4, so its average is the more settled of the two.

Chess Opening Blunders ships an update every 2 months, Blank Jigsaw Puzzle every 3 weeks. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Chess Opening Blunders | Blank Jigsaw Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (246 ratings)](https://appshunter.io/ios/app/chess-opening-blunders/id1129867864/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/blank-jigsaw-puzzle/id1547764140/reviews)** |
| Number of ratings | **246** | 4 |
| Positive reviews | 84.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 43 MB | 50 MB |
| Requires iOS | **8.0** | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chess King](https://appshunter.io/developer/1096660597) | [其跃 吴](https://appshunter.io/developer/660989470) |

## 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 |


### Blank Jigsaw Puzzle

[App page](https://appshunter.io/ios/app/blank-jigsaw-puzzle/id1547764140)

This logic puzzle game challenges you to fit irregular pieces onto a board without any visual cues. Rotate pieces to find the perfect fit and complete the platter.

**Highlights:** Abstract jigsaw pieces, Rotating puzzle pieces, Logic-based challenges, Irregular edge board, Perfect fit completion

**Features:** macOS Compatibility

**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 Blank Jigsaw Puzzle free?

Blank Jigsaw Puzzle is free to download, with no in-app purchases.

### Which has better reviews, Chess Opening Blunders or Blank Jigsaw Puzzle?

Blank Jigsaw Puzzle is rated higher. Chess Opening Blunders averages 4.7 out of 5 from 246 ratings, while Blank Jigsaw Puzzle averages 5.0 from 4 ratings.

### Do Chess Opening Blunders or Blank Jigsaw Puzzle have ads?

Blank Jigsaw Puzzle shows ads; Chess Opening Blunders does not.

### Which is updated more often, Chess Opening Blunders or Blank Jigsaw Puzzle?

Chess Opening Blunders ships an update every 2 months, and Blank Jigsaw Puzzle every 3 weeks. Most recently, Chess Opening Blunders was updated on September 25, 2026 and Blank Jigsaw Puzzle on September 17, 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.*