# Structura 元素合成 ― 化学反応を覚えるパズル vs ChronoMap

The clearest difference is monetization model: ChronoMap at free against Structura 元素合成 ― 化学反応を覚えるパズル's free with in-app purchases. ChronoMap also leads on update cadence (every 3 days vs weekly) and iOS requirement (15.0 vs 17.0). Structura 元素合成 ― 化学反応を覚えるパズル's advantage is review sentiment (100% vs 80%). On ads, in-app purchases and device support there is nothing between them.

Structura 元素合成 ― 化学反応を覚えるパズル ships an update weekly, ChronoMap every 3 days. The most recent releases landed on October 9, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Structura 元素合成 ― 化学反応を覚えるパズル | ChronoMap |
| --- | --- | --- |
| Price | — | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/structura/id6795030898/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 99 MB | 99 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SNAPLACE](https://appshunter.io/developer/6790258232) | [HOIPOI Co., Ltd.](https://appshunter.io/developer/6801120710) |

## 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)

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:** none


### ChronoMap

[App page](https://appshunter.io/ios/app/chronomap/id6801120707)

Explore human history with an interactive world map and timeline. Witness political borders shift and events unfold in their geographical context. Features narrated stories, quizzes, and detailed information on historical periods and places.

**Highlights:** Animated historical maps from 28,000 BC to present, 2,794 explained historical events and people, 52 narrated historical stories, Blank-map quizzes and drills, Relationship trees for historical themes, Offline access to all data, Spaced-repetition review for collected cards

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

**In-app purchases:** none


## Frequently asked questions

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

Pricing for Structura 元素合成 ― 化学反応を覚えるパズル is not currently listed on the App Store.

### Is ChronoMap free?

ChronoMap is free to download, with no in-app purchases.

### Do Structura 元素合成 ― 化学反応を覚えるパズル or ChronoMap have ads?

Neither Structura 元素合成 ― 化学反応を覚えるパズル nor ChronoMap shows ads.

### Which is updated more often, Structura 元素合成 ― 化学反応を覚えるパズル or ChronoMap?

Structura 元素合成 ― 化学反応を覚えるパズル ships an update weekly, and ChronoMap every 3 days. Most recently, Structura 元素合成 ― 化学反応を覚えるパズル was updated on October 9, 2026 and ChronoMap on October 20, 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.*