Organic Reactions vs SynStrategy
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.
SynStrategy
This app categorizes organic reactions by the functional groups they form, aiding chemists in synthetic analysis. It offers over 500 transformations and 400 synthesis examples, with detailed subdivisions for clarity.
- Reactions categorized by functional group
- 27 main functional group categories
- Over 500 transformations
- Over 400 total synthesis examples
- Subdivided functional group categories
- Highlights synthetic use cases
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SynStrategy is an organic chemistry app for anyone studying or working in organic synthesis. Its key feature is the categorization of named reactions and unnamed chemical reactions by the functional groups they form, helping students and practitioners navigate the vast landscape of organic transformations. The app features 27 main functional group categories, each further subdivided (for example, Alcohols include primary, secondary, tertiary, allylic, and homoallylic alcohols, and more). This structured organization gives chemists a clearer view of available transformations during synthetic and retrosynthetic analysis. SynStrategy currently includes over 500 organic chemistry reactions, with their synthetic use cases highlighted in more than 400 total synthesis examples. NEW: We've added the mechanisms for a collection of classic named oxidation reactions, with more to come. Each mechanism includes literature references you can look up for further detail. The first set covers the Albright-Goldman, Anelli, Babler-Dauben, Baeyer-Villiger, Ball-Goodwin-Morton, Collins, Corey-Gilman-Ganem, Corey-Kim, Corey-Schmidt, Corey-Suggs, Criegee, Dakin, Davis, Davis Asymmetric, and TEMPO oxidations. Beyond the reference library, SynStrategy includes interactive tools to help you study organic chemistry and organize these transformations. Save specific reactions into custom datasets that can be exported and shared with colleagues. Test your knowledge with the app's study modes: a Quiz system featuring three formats with multiple-choice and advanced questions on chemical reactions and total synthesis steps, plus a traditional Flashcard mode. Both modes include session analytics so you can track your progress. NEW: A Statistics dashboard now lets you review your quiz and flashcard results, see what you've studied, and get an overview of your activity in the app over time (More → Statistics). Whether you're preparing for an organic chemistry (orgo) exam, reviewing named reactions and mechanisms, or planning a synthesis in the lab, SynStrategy aims to be a useful organic chemistry companion. There are countless exceptional total syntheses and synthetically relevant methodologies in the literature, and we aim to grow the selection over time. Have a particular organic reaction or total synthesis example you'd like to see added? E-mail us: serviceofsynthesis@gmail.com Summary of Features: - Named and unnamed reactions, categorized by functional group - Over 500 organic chemistry transformations - Mechanisms for selected reactions (more to come) - Over 400 total synthesis examples - Create, export, and import custom reaction datasets - Multi-format Quiz system with session analytics - Dedicated Flashcard mode for systematic review - Statistics to review your results and activity in the app over time If you need support, please contact serviceofsynthesis@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: SynStrategy at none against Organic Reactions's 2. SynStrategy also leads on review sentiment (100% vs 68%) and rating (5.0 vs 4.7). Organic Reactions's advantage is ratings volume (170 vs 10). On price, ads, device support and iOS requirement 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. SynStrategy asks for nothing beyond the download.
SynStrategy holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Organic Reactions has 170 ratings behind it against 10, 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 100% of SynStrategy's.
Organic Reactions ships an update every 10 months, SynStrategy every 3 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | Organic Reactions | SynStrategy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (170 ratings) | 5.0 (10 ratings) — better |
| Positive reviews | 68.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 170 — better | 10 |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Florent Breton | Willi M. Amberg |
Customer experience
Organic Reactions
SynStrategy
In-app purchases
Organic Reactions
- One month subscription$0.99
- Full App$4.99
SynStrategy
No in-app purchases
Questions
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Is SynStrategy free?
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