# 珠心算出题 vs 15 Puzzle Polygon

The clearest difference is in-app purchases: 珠心算出题 at none against 15 Puzzle Polygon's 1. 珠心算出题 also leads on ads (none vs shown) and update cadence (every 9 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. 15 Puzzle Polygon sells 1 one-off in-app purchase. 珠心算出题 asks for nothing beyond the download.

珠心算出题 ships an update every 9 days, 15 Puzzle Polygon every 6 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 珠心算出题 | 15 Puzzle Polygon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/15-puzzle-polygon/id1493750827/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 41 MB | 19 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Beijing You-Yeah Cultural Development Co., Ltd.](https://appshunter.io/developer/1142633858) | [振华 许](https://appshunter.io/developer/1437340417) |

## What reviewers say

### 珠心算出题

[App page](https://appshunter.io/ios/app/id1443983742)

**Features:** macOS Compatibility

**In-app purchases:** none


### 15 Puzzle Polygon

[App page](https://appshunter.io/ios/app/15-puzzle-polygon/id1493750827)

Engage your mind with a variety of logic and puzzle games. Explore unique variations of classic puzzles like the 15-puzzle, tile matching, and color-based challenges. Offers numerous levels and modes to test your thinking skills.

**Highlights:** Extended 15-puzzle variations, Hexagonal and triangular boards, Tile matching with various shapes, Color-based logic puzzles, Maze and rotating puzzles, Nonogram and number puzzles

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is 珠心算出题 free?

珠心算出题 is free to download, with no in-app purchases.

### Is 15 Puzzle Polygon free?

15 Puzzle Polygon is free to download, with in-app purchases available.

### Do 珠心算出题 or 15 Puzzle Polygon have ads?

15 Puzzle Polygon shows ads; 珠心算出题 does not.

### Which is updated more often, 珠心算出题 or 15 Puzzle Polygon?

珠心算出题 ships an update every 9 days, and 15 Puzzle Polygon every 6 weeks. Most recently, 珠心算出题 was updated on November 2, 2026 and 15 Puzzle Polygon on November 3, 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.*