Chemical Dictionary vs iORA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chemical Dictionary
Access a comprehensive database of chemical equations, substances, and concepts. This offline-capable application provides detailed explanations and includes a periodic table and solubility chart for enhanced learning.
- Search over 10,000 equations
- Search over 3,000 chemical substances
- Detailed concept explanations
- Offline functionality
- Chemical periodic table
- Solubility chart
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Application helps to find chemical equations, chemical substances and concepts in chemistry. Typical features: - Search with over 10000 equations and 3000 chemical substances - Chemical equations are displayed detailing the substances involved and their status. - App explains in detail more than 200 concepts used in chemistry. - App can work well even without internet connection In addition, the app also has other features such as: - Questions and answers about chemical equations - Chemical periodic table - Soluble spreadsheet - Metal activity range. App supports 2 languages Vietnamese and English.
iORA
Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.
- 3D chemical reaction visualization
- Quantum-mechanical simulations
- Interactive learning
- Easy to use interface
- Educational tool
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iORA is a free, easy to use, highly interactive smartphone application that provides 3D visualization of chemical reactions based on quantum-mechanical simulations.
Screenshots
Verdict
The clearest difference is rating: iORA at 5.0 against Chemical Dictionary's 4.4. iORA also leads on review sentiment (100% vs 67%). Chemical Dictionary's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (10.0 vs 14.3). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
iORA holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 7 and 12 respectively. Written reviews point the same way: 67% of Chemical Dictionary's written reviews are positive against 100% of iORA's.
Chemical Dictionary ships an update every 3 weeks, iORA every 2 months. Both last shipped on October 9, 2026.
| Parameter | Chemical Dictionary | iORA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 | 12 — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 14.3 |
| Further details — not scored | ||
| Size | 74 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Ban Nguyen Ngoc | Daniel Ess |
Customer experience
Chemical Dictionary
iORA
In-app purchases
Chemical Dictionary
No in-app purchases
iORA
No in-app purchases
Questions
Is Chemical Dictionary free?
Is iORA free?
Which has better reviews, Chemical Dictionary or iORA?
Do Chemical Dictionary or iORA have ads?
Which is updated more often, Chemical Dictionary or iORA?
Other comparisons
