ReactionFlash vs iChemistry™
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.
iChemistry™
This app serves as a personal chemistry tutor, offering comprehensive learning materials for students. It covers over 70 topics with clear explanations and effective syntheses for easy review of formulas and laws. An advanced search helps locate specific subjects quickly.
- Over 70 chemistry topics
- Clear and simple explanations
- Effective synthesis for review
- Advanced search algorithm
- Interactive multiple choice quizzes
- Step-by-step solved examples
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iChemistry is your personal chemistry tutor. It is used by millions of students every day, and it’s the only app about chemistry that includes everything you need to successfully pass your exams. WHAT YOU CAN DO WITH ICHEMISTRY: • Learn quickly from over 70 topics, thanks to the clear and simple explanation. • Easily repeat formulas, laws, definitions and properties, thanks to the effective synthesis. • Quickly find the topics that matters to you thanks to the advanced search algorithm. • Download the app now and try the Pro version for free: you'll have all the most advanced features for a few days. WHAT YOU WILL GET WITH THE PRO VERSION: • Get more topics, more than 120, including the most advanced topics and all those that we will add in the future. • Get Interactive multiple choice Quizzes, with which you can practice and get a rating of your level of preparation. • Discover the step by step Solved Examples, to help you understand the methods to correctly solve problems. Have questions, problems, or feedback? Reach out to us at support@mobixee.com
Screenshots
Verdict
The clearest difference is rating: ReactionFlash at 4.8 against iChemistry™'s 3.6. ReactionFlash also leads on monetization model (free vs freemium) and review sentiment (81% vs 66%). iChemistry™'s advantage is iOS requirement (9.0 vs 14.0). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.
ReactionFlash holds the better App Store score, 4.8 against 3.6. Both are backed by a comparable volume of ratings — 41 and 14 respectively. Written reviews point the same way: 81% of ReactionFlash's written reviews are positive against 66% of iChemistry™'s.
ReactionFlash ships an update every 4 months, iChemistry™ every 5 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | ReactionFlash | iChemistry™ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (41 ratings) — better | 3.6 (14 ratings) |
| Positive reviews | 80.6% of reviews — better | 66.3% of reviews |
| Number of ratings | 41 — better | 14 |
| Update frequency | Every 4 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 104 MB |
| Age rating | 4+ | 9+ |
| Developer | Elsevier Limited | Antonio Giarrusso |
Customer experience
ReactionFlash
iChemistry™
In-app purchases
ReactionFlash
No in-app purchases
iChemistry™
No in-app purchases
Questions
Is ReactionFlash free?
Is iChemistry™ free?
Which has better reviews, ReactionFlash or iChemistry™?
Do ReactionFlash or iChemistry™ have ads?
Which is updated more often, ReactionFlash or iChemistry™?
Other comparisons
