ReactionFlash vs CycleChem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReactionFlash
This app serves as a comprehensive flashcard-style learning tool for named chemical reactions. It provides detailed information on reaction mechanisms and examples from scientific literature, with a quiz mode to test user knowledge.
- Learn named chemical reactions
- Understand reaction mechanisms
- View literature examples
- Quiz mode for knowledge testing
- Flashcard interface
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Want to refresh your memory on named chemical reactions before an exam or a group meeting? Get all the details with ReactionFlash(R) as a great way to learn named reactions, understand their mechanisms and view examples published in peer-reviewed literature. Designed and developed in consultation with Professor Dr. Erick M. Carreira of ETH Zürich, the app covers 1'266 named chemical reactions, by far the largest collection of Named Reactions. Professor Carreira has helped ensure that we have all the fundamental reactions that should be part of every chemist’s toolkit: from the best-known ones to the ones only Nobel Prize winners remember! The app is designed like a set of flash cards so it can be used as a learning tool as well as a reference. Each ‘card’ shows the reaction, its mechanism and examples from peer-reviewed, published literature. It also has a quiz mode that lets you test your knowledge. Linking into Reaxys enables you to find the most recent examples of each reaction, many with experimental details. Reaxys delivers experimental facts from the literature, enabling researchers to find the best synthetic routes and conditions. Find out more at https://www.elsevier.com/solutions/reaxys Download the app now and see if you know all the named reactions! Summary: - Learn named reactions - Review and understand mechanisms - Explore examples published in peer-reviewed literature - Take the ReactionFlash quiz and see how much you know If you need support, please contact us at reactionflash@elsevier.com. Reaxys and ReactionFlash are trade marks of Elsevier Limited, used under license.
CycleChem
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Whether you are a student or a young professional, CycleChem allows you to memorize chemical structures and names while having fun. CycleChem has three sections for you to explore: QuickLearn: Feel free to swipe through the list of heterocycles on the go, to quickly learn. You can choose to hide the structure or the name to test yourself. Games: Choose between no less than six games and challenge your knowledge. Change the number of questions and collect rewards. List: Scroll through the list of heterocyclic compounds and filter them according to multiple criteria.
Screenshots
Verdict
The clearest difference is in-app purchases: ReactionFlash at none against CycleChem's 1. ReactionFlash also leads on iOS requirement (14.0 vs 16.6). 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. CycleChem sells 1 one-off in-app purchase. ReactionFlash asks for nothing beyond the download.
ReactionFlash ships an update every 4 months, CycleChem every 6 months. Both last shipped on October 7, 2026.
| Parameter | ReactionFlash | CycleChem |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (41 ratings) — better | — |
| Positive reviews | 80.6% of reviews | — |
| Number of ratings | 41 — better | — |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 37 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Elsevier Limited | Eric ORDONNEAU |
In-app purchases
ReactionFlash
No in-app purchases
CycleChem
- Unlock all games$0.99
Questions
Is ReactionFlash free?
Is CycleChem free?
Do ReactionFlash or CycleChem have ads?
Which is updated more often, ReactionFlash or CycleChem?
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