# 四字熟語侍 vs Structura 元素合成 ― 化学反応を覚えるパズル

The clearest difference is device support: Structura 元素合成 ― 化学反応を覚えるパズル at 2 against 四字熟語侍's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. 四字熟語侍 sells 1 in-app purchase, starting at $1.99 per month and Structura 元素合成 ― 化学反応を覚えるパズル sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 四字熟語侍 | Structura 元素合成 ― 化学反応を覚えるパズル |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 53 MB | 99 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [KNOWLEDGE UP LLC](https://appshunter.io/developer/1834585058) | [SNAPLACE LLC](https://appshunter.io/developer/6790258232) |

## What reviewers say

### 四字熟語侍

[App page](https://appshunter.io/ios/app/id6756404216)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の非表示（月額） | $1.99 | per month |


### Structura 元素合成 ― 化学反応を覚えるパズル

[App page](https://appshunter.io/ios/app/structura/id6795030898)

Learn chemical reactions through a falling puzzle game. Connect elements and ions to form compounds, with visual representations of structures and interactive quizzes to reinforce learning. Covers inorganic, organic, and polymer reactions.

**Highlights:** Falling puzzle gameplay, Visual representation of chemical structures, Interactive quizzes, Covers inorganic, organic, and polymer reactions, Progress tracking for forgotten reactions, Element characters with stage-specific tips

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全単元を解放 | $2.99 | one-time |


## Frequently asked questions

### Is 四字熟語侍 free?

四字熟語侍 is free to download, with in-app purchases available.

### Is Structura 元素合成 ― 化学反応を覚えるパズル free?

Structura 元素合成 ― 化学反応を覚えるパズル is free to download, with in-app purchases available.

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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.*