# Structura: Element Synthesis — Learn reactions as you play

> Educational puzzle game for learning chemical reactions through element synthesis. (iPhone/iPad app by SNAPLACE.)

- Source: https://appshunter.io/ios/app/structura-element-synthesis/id6795030898 (this page in markdown: same URL + `.md`)
- Developer: [SNAPLACE](https://appshunter.io/developer/6790258232)
- Category: Education, Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 100 MB
- Languages: American English, Japanese
- Released: 2026-08-11
- Data updated: 2026-11-08
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/structura-element-synthesis/id6795030898/reviews.md

## What is Structura?

LEARN CHEMICAL REACTIONS WITH A FALLING-BLOCK PUZZLE

Drop elements and ions, place them side by side, and they combine.
H plus O makes −OH. Add another H and you have H₂O.
A compound forms only when the bonds and charges add up.

Instead of turning textbook pages, you build each reaction with your own hands.

WHAT'S INSIDE

356 reactions across inorganic, organic and polymer chemistry (308 in the Codex), in 46 stages.

- From atoms to molecules
- Making gases, and the halogens
- Metals, oxides and industrial methods (contact process, Ostwald process, ammonia-soda process, blast furnace)
- Acids, bases, neutralization and salts
- Redox and ionization tendency (permanganate, dichromate, iodometric titration)
- Metal ion precipitates and complex ions
- Aliphatic compounds (oxidizing alcohols, esterification, silver mirror test, iodoform test)
- Aromatic compounds (nitration, sulfonation, diazotization, azo dyes, cumene process)
- Polymers (sugars, amino acids, protein tests, resins, rubber, vinylon)

This app is about reactions. It does not cover calculation topics such as moles, equilibrium, electrochemistry, thermochemistry or crystal lattices.
The content follows the Japanese high school chemistry curriculum, so some topics and terms may differ from your course.

BUILT TO BE SEEN

Benzene is drawn as a hexagon, glucose as a ring, starch as linked rings.
Precipitates sink to the bottom and gases escape upward, in their real colors.

PRACTICE RECALLING

- A 3-question quiz after each stage, with the product hidden
- A Test mode in the Codex that masks the products
- Reactions you miss come back in later quizzes, and their materials fall more often

SET UP THE CONDITIONS YOURSELF

Heat, electrolysis, light and catalysts are devices you use on the whole flask. You decide when to use them.

FREE EXPERIMENT MODE

With the full unlock, choose what falls, in the order you like, and try your own combinations. No targets and no material limit.

MEET THE ELEMENTS

Each of the 46 stages introduces a character who teaches the key point of that topic, in a short conversation with Mol, an apprentice chemist.

PRICING

Units 1-3 (14 stages, 91 Codex entries) are free.
A one-time purchase unlocks everything else.

- No additional charges
- No subscriptions
- No ads
- No gacha
- No stamina

## Key features

- Falling-block puzzle gameplay
- Element and ion combination
- 356 chemical reactions covered
- 46 learning stages
- In-game quizzes and tests
- Free experiment mode
- Visual representation of compounds

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Units | $2.99 | one-time |


## Is Structura safe?

Not enough ratings yet to assess Structura.

## Is Structura legit?

Structura: Element Synthesis appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Structura is 65 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/structura-element-synthesis/id6795030898/reviews.md

### 5/5 — 勉強になる！

*2026-08-16*

おもろい

## Frequently asked questions about Structura

### What is Structura: Element Synthesis?

Structura: Element Synthesis is an educational puzzle game designed to teach chemical reactions. Players drop and combine elements and ions to form compounds, making learning interactive.

### What chemistry topics does Structura: Element Synthesis cover?

It covers reactions from inorganic, organic, and polymer chemistry, including topics like acids, bases, redox, and various industrial processes. It focuses on reactions and does not include calculation topics.

### How does Structura: Element Synthesis help with learning?

The app uses a falling-block puzzle format where players build reactions. It includes quizzes after each stage and a Test mode to practice recall, with missed reactions reappearing in later quizzes.

### Is Structura: Element Synthesis free to play?

Units 1-3, covering 14 stages and 91 Codex entries, are available for free. A one-time purchase unlocks all remaining content.

### Does Structura: Element Synthesis have ads?

No, Structura: Element Synthesis is ad-free. The developer explicitly states 'No ads' as a feature.

### What age rating does Structura: Element Synthesis have?

Structura: Element Synthesis has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger learners.

### How often is Structura: Element Synthesis updated?

The app was last updated on November 6, 2026, indicating active development and support. The latest version is 1.3.1.

### What devices is Structura: Element Synthesis available on?

Structura: Element Synthesis is available on iPhone and iPad, making it accessible to users within the Apple ecosystem.

## Version history (last 5 releases)

### 1.3.1 — 2026-11-06

- Structura is now available in English. The game appears in English on any device not set to Japanese.

### 1.3.0 — 2026-11-06

Structura now speaks English. The whole game follows your device language.

### 1.2.0 — 2026-11-05

【新機能】自由実験モード
目的物質も材料の制限もなく、好きなものを選んで落とせるモードを追加しました。全単元の解放でご利用いただけます。

・元素・化合物・イオン・試薬から、落とすものを選べます
・選んだ順に1個ずつ落ちるので、組み合わせを自分で試せます
・加熱・電気分解・光・触媒は何度でも使えます

【改善】
・化学式の文字がブロックの端にかからないように調整しました

### 1.1.1 — 2026-08-27

v1.1.1
動作を軽くしました。表示の描き直しを見直し、電池の減りと本体の発熱をおさえました。

### 1.1 — 2026-08-26

v1.1
動作を軽くしました。表示の描き直しを見直し、電池の減りと本体の発熱をおさえました。

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All apps by SNAPLACE: https://appshunter.io/developer/6790258232

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-08.*