Chem Viewer vs iORA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chem Viewer
Visualize chemical compounds in 2D and 3D with this app. Access over 3 million compounds from the PubChem database and interact with 3D models using touch gestures. Ideal for students, researchers, and educators.
- 2D and 3D chemical views
- Access to 3+ million compounds
- PubChem database integration
- Interactive 3D model manipulation
- Suitable for students and researchers
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View molecules on the go with Chem Viewer! Supporting two-dimensional and three-dimensional views Chem Viewer can visualize more than 3 million compounds from the PubChem database. Interact with 3d models using your fingers! Great for students, researchers, and educators.
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 Chem Viewer's 4.0. iORA also leads on ads (none vs shown) and review sentiment (100% vs 67%). Chem Viewer's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (11.0 vs 14.3). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
iORA holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 12 respectively. Written reviews point the same way: 67% of Chem Viewer's written reviews are positive against 100% of iORA's.
Chem Viewer ships an update every 4 days, iORA every 2 months. The most recent releases landed on September 8, 2026 and September 7, 2026 respectively.
| Parameter | Chem Viewer | iORA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 12 — better |
| Update frequency | Every 4 days — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.3 |
| Further details — not scored | ||
| Size | 40 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Dylan Riffle | Daniel Ess |
Customer experience
Chem Viewer
iORA
In-app purchases
Chem Viewer
No in-app purchases
iORA
No in-app purchases
