Comparison

ReactionFlash vs Learn Organic Nomenclature

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Learn named chemical reactions
  • Understand reaction mechanisms
  • View literature examples
  • Quiz mode for knowledge testing
  • Flashcard interface
Features
Read full description

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.

About

Learn Organic Nomenclature

Learn the nomenclature of organic molecules through interactive levels and creative building. This app offers tutorials and challenges to help you master naming and drawing organic compounds.

Highlights
  • Interactive naming and drawing exercises
  • Over 70 levels for various organic compounds
  • Creative mode to build and name molecules
  • Colorful markings for molecule parts
  • Option to hide names for self-challenge
Features
Read full description

Master organic chemistry nomenclature through interactive lessons, molecule-building exercises, challenges, and practice tests. Learn IUPAC naming step by step with over 70 levels designed for high school chemistry, AP Chemistry, and introductory organic chemistry students. Instead of memorizing rules, you'll actively build, analyze, and name molecules yourself in an interactive chemistry training. FEATURES Interactive tutorials that teach nomenclature from the ground up, with a organic chemistry quiz! Over 70 levels covering the organic chemistry nomenclature of hydrocarbons: • Alkanes • Alkenes • Alkynes • Alcohols • Aldehydes • Ketones Learn in both directions: • Match molecules to names • Match names to molecular structures • Draw molecules from given names • Name molecules you create yourself Chemistry tutorials: In levels that introduce new o chem concepts, there are chemistry tutorials explaining you exactly how to master the level. Creative Mode: Build your own organic molecules and let the app generate the correct IUPAC name instantly. Perfect for experimenting, checking homework, or exploring nomenclature rules. Practice Tests: Challenge yourself with tests that help you check your progress and identify topics that need more practice. Visual learning aids: Color-coded highlights show which parts of a molecule correspond to specific parts of its IUPAC name. Use the molecule builder to create a molecule, then see how it is named! Hide names and for chemistry challenges and for additional organic chemistry practice. Planetary Nomenclature Neptune is designed to make learning organic chemistry more engaging, intuitive, and interactive than traditional memorization methods. Additional supported structures include halogen alkanes and carboxylic acids. Ring structures are not currently supported. Whether you're preparing for AP Chemistry, studying organic chemistry (ochem) at school for exam prep or doing university chemistry, or you are simply interested in learning chemical nomenclature, this app provides a practical and interactive way to master IUPAC naming. It's a fun learning game!

Screenshots

ReactionFlash4 screens
Learn Organic Nomenclature4 screens

Verdict

The call

The clearest difference is rating: ReactionFlash at 4.8 against Learn Organic Nomenclature's 4.3. ReactionFlash also leads on in-app purchases (none vs 3) and ratings volume (41 vs 7). Learn Organic Nomenclature's advantage is update cadence (fortnightly vs every 4 months). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Learn Organic Nomenclature sells 3 one-off in-app purchases. ReactionFlash asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ReactionFlash holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: ReactionFlash has 41 ratings behind it against 7, so its average is the more settled of the two. Written reviews split almost evenly too, at 81% and 81% positive.

UpkeepUpdate frequency

ReactionFlash ships an update every 4 months, Learn Organic Nomenclature fortnightly. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

Scorecard5 real differences · 5 level
ReactionFlash versus Learn Organic Nomenclature: the parameters behind the verdict, then further details
ParameterReactionFlashLearn Organic Nomenclature
PriceFreeFree
Rating4.8 (41 ratings) — better4.3 (7 ratings)
Positive reviews80.6% of reviews81.0% of reviews — better
Number of ratings41 — better7
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.0
Further details — not scored
Size37 MB50 MB
Age rating4+4+
DeveloperElsevier LimitedPaul Schwind

Customer experience

ReactionFlash

All ratings41 ratings
Positive95.1%
Neutral2.4%
Negative2.4%
Written reviews31 reviews
Positive80.6%
Neutral6.5%
Negative12.9%

Learn Organic Nomenclature

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews21 reviews
Positive81.0%
Neutral4.8%
Negative14.3%

In-app purchases

None

ReactionFlash

No in-app purchases

3 purchases

Learn Organic Nomenclature

One-time3
  • Premium$3.99
  • Premium Class of Size 20$24.99
  • Premium Class of Size 40$39.99

Questions

Is ReactionFlash free?
ReactionFlash is free to download, with no in-app purchases.
Is Learn Organic Nomenclature free?
Learn Organic Nomenclature is free to download, with in-app purchases available.
Which has better reviews, ReactionFlash or Learn Organic Nomenclature?
ReactionFlash is rated higher. ReactionFlash averages 4.8 out of 5 from 41 ratings, while Learn Organic Nomenclature averages 4.3 from 7 ratings.
Do ReactionFlash or Learn Organic Nomenclature have ads?
Neither ReactionFlash nor Learn Organic Nomenclature shows ads.
Which is updated more often, ReactionFlash or Learn Organic Nomenclature?
ReactionFlash ships an update every 4 months, and Learn Organic Nomenclature fortnightly. Most recently, ReactionFlash was updated on September 21, 2026 and Learn Organic Nomenclature on September 14, 2026.

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