Organic Reactions vs Physiology Solution
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Organic Reactions
Access key functional group reactions and their mechanisms in organic chemistry. Quickly find links between reactants and products, including synthesis and protection reactions. Some advanced features and reaction lists require an additional purchase.
- Functional group reactions
- Reaction mechanisms
- Reactant-product links
- Synthesis reactions
- Protection reactions
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This app allows people working in organic chemistry for a quick access to the main functional group reactions and their mechanisms. The application is organized to provide a direct link between a reactant and its corresponding product, as well as the synthesis and protection reactions. To enable a regular updating and to support this work, some of the functions, and a list of reactions sorted by name requires an additional purchase. If you have any problem, do not hesitate to send me an email, by explaining the nature of your problem and your phone model.
Physiology Solution
Explore comprehensive information on human physiology, drawing from established medical texts. This educational tool provides key concepts and figures for learning purposes.
- Human physiology content
- Based on Guyton and Ganong
- Educational figures and text
- Comprehensive information
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Everything about Human Physiology Disclaimer: Concepts are mainly based on Guyton and Ganong. Some figures and text parts are also used from these books only for educational purpose.
Screenshots
Verdict
The clearest difference is rating: Organic Reactions at 4.7 against Physiology Solution's 3.8. Organic Reactions also leads on ratings volume (170 vs 5). Physiology Solution's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 17.6). On price, review sentiment, update cadence and ads 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. Organic Reactions sells 2 one-off in-app purchases. Physiology Solution asks for nothing beyond the download.
Organic Reactions holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: Organic Reactions has 170 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 68% of Organic Reactions's written reviews are positive against 67% of Physiology Solution's.
Organic Reactions ships an update every 10 months, Physiology Solution every 7 months. The most recent releases landed on October 22, 2026 and September 24, 2026 respectively.
| Parameter | Organic Reactions | Physiology Solution |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (170 ratings) — better | 3.8 (5 ratings) |
| Positive reviews | 68.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 170 — better | 5 |
| Update frequency | Every 10 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 12+ |
| Developer | Florent Breton | Quantum Quasar Infoworld LLP |
Customer experience
Organic Reactions
Physiology Solution
In-app purchases
Organic Reactions
- One month subscription$0.99
- Full App$4.99
Physiology Solution
No in-app purchases
Questions
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Is Physiology Solution free?
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