# Structura 元素合成 ― 化学反応を覚えるパズル vs ponkan 面白い英和辞典

The clearest difference is ads: Structura 元素合成 ― 化学反応を覚えるパズル at none against ponkan 面白い英和辞典's shown. ponkan 面白い英和辞典's advantage is update cadence (daily vs weekly). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Structura 元素合成 ― 化学反応を覚えるパズル sells 1 one-off in-app purchase and ponkan 面白い英和辞典 sells 7 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Structura 元素合成 ― 化学反応を覚えるパズル ships an update weekly, ponkan 面白い英和辞典 daily. Both last shipped on November 6, 2026.

## The numbers

| Metric | Structura 元素合成 ― 化学反応を覚えるパズル | ponkan 面白い英和辞典 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Daily** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 100 MB | 80 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [SNAPLACE LLC](https://appshunter.io/developer/6790258232) | [Ibuki Hara](https://appshunter.io/developer/6791958118) |

## What reviewers say

### 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)

This educational puzzle game helps users memorize chemical reactions through interactive gameplay. By combining falling elements and ions, players learn to form compounds and understand reaction mechanisms. It features visual representations of molecular structures and includes quizzes to reinforce learning.

**Highlights:** Falling element puzzle gameplay, Learn chemical reactions interactively, Visual molecular structure representation, In-game quizzes for recall practice, Progress tracking for forgotten reactions, Character-based learning for elements

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

**In-app purchases (1)**

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


### ponkan 面白い英和辞典

[App page](https://appshunter.io/ios/app/ponkan/id6809722393)

This app is a unique English-Japanese dictionary featuring 858 uncommon words that are unlikely to be used in everyday life. It offers definitions, pronunciations, example sentences, and a quiz mode. Users can also save favorite words and remove ads with a one-time purchase.

**Highlights:** 858 uncommon English words, Search by English or Japanese, Illustrations, pronunciation, audio, examples, Four-choice quiz mode, Save favorite words, Ad removal purchase

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ポンカンプレミアム（月額） | $2.99 | per month |
| ポンカンプレミアム（年額） | $17.99 | per year |
| 専門英語マニア | $1.99 | one-time |
| かぞえるえいたんご | $1.99 | one-time |
| スポーツ英語７２選 | $1.99 | one-time |
| タベタン | $1.99 | one-time |
| 天気の英単語 | $1.99 | one-time |


## Frequently asked questions

### 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.

### Is ponkan 面白い英和辞典 free?

ponkan 面白い英和辞典 is free to download, with in-app purchases available.

### Do Structura 元素合成 ― 化学反応を覚えるパズル or ponkan 面白い英和辞典 have ads?

ponkan 面白い英和辞典 shows ads; Structura 元素合成 ― 化学反応を覚えるパズル does not.

### Which is updated more often, Structura 元素合成 ― 化学反応を覚えるパズル or ponkan 面白い英和辞典?

Structura 元素合成 ― 化学反応を覚えるパズル ships an update weekly, and ponkan 面白い英和辞典 daily. Most recently, Structura 元素合成 ― 化学反応を覚えるパズル was updated on November 6, 2026 and ponkan 面白い英和辞典 on November 6, 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.*