Thoth vs Structura
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thoth
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Thoth(トート)は、高校化学の学習を「暗記」と「演習」の両輪で支えるアプリです。 ■ おぼえる — 忘れない暗記 理論・無機・有機の全範囲から厳選した1,200以上の項目を、科学的な復習スケジュール(間隔反復)で出題。「覚えたのに忘れる」を防ぎ、定期テストから共通テストまで、知識を維持し続けます。 ・あいまいな記憶は短い間隔で、確実な記憶は長い間隔で再出題 ・1回の学習は数分から。通学時間やすきま時間で続けられる ・オフラインでも学習可能。電波のない場所でも止まらない ■ 演習 — 解いて、間違いから学ぶ 700問以上の演習問題を収録。選択肢ごとに「なぜ間違えたか」を分析し、つまずきの原因(誤概念)に沿った解説を表示します。ただの正誤判定ではなく、「どこで考え方がずれたか」まで示します。 ■ 単元構成 教科書の流れに沿った60以上の単元で構成。理論化学・無機化学・有機化学のどこからでも始められます。 ■ 学校・クラスでの利用 先生からのクラスコードで参加すると、宿題の配信と提出状況の共有ができます。個人利用の場合、この機能は使わなくても構いません。 ■ こんな人におすすめ ・定期テスト前に暗記をまとめて固めたい ・共通テストに向けて化学の知識を維持したい ・覚えたはずのことをすぐ忘れてしまう ・すきま時間で効率よく勉強したい 料金:無料で始められます。
Structura
Learn chemical reactions by playing a falling-block puzzle game. Combine elements and ions to build compounds, with over 350 reactions covered. Practice recall with quizzes and tests, and experiment freely with all elements.
- 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
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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
Screenshots
Verdict
The clearest difference is in-app purchases: Thoth at none against Structura's 1. Thoth also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Structura sells 1 one-off in-app purchase. Thoth asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.
| Parameter | Thoth | Structura |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 4 days | Every 4 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 71 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | THOTH Inc. | SNAPLACE |
In-app purchases
Thoth
No in-app purchases
Structura
- Unlock All Units$2.99









