Comparison

ReactionFlash vs Structural Formulas Study

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 helps students and chemists review and understand named chemical reactions, their mechanisms, and examples from scientific literature. It functions like flashcards and includes a quiz mode to test knowledge.

Highlights
  • Learn named chemical reactions
  • Understand reaction mechanisms
  • View literature examples
  • Quiz mode for knowledge testing
  • Flashcard-style learning
  • Extensive collection of reactions
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

Structural Formulas Study

Explore and study over 100 molecular structures with detailed properties and clear diagrams. This app offers quick search and filtering for efficient exam preparation and daily learning, with offline access available.

Highlights
  • 100+ molecular structures
  • Detailed structural formulas
  • Essential chemical properties
  • Quick search and filters
  • Offline access
  • Exam preparation tool
Features
Read full description

Learn chemistry the easy way. Explore, search, and filter over 100 molecular structures with clear diagrams and essential data — perfect for exam prep or daily study. Features - 100+ molecules - Structural formulas with detailed properties (mass, density, pKa, etc.) - Quick search & category filters - Offline access – no internet required - Ideal for high school & college chemistry students Make chemistry study simple, efficient, and always at your fingertips!

Screenshots

ReactionFlash4 screens
Structural Formulas Study4 screens

Verdict

The call

The clearest difference is ratings volume: ReactionFlash at 42 against Structural Formulas Study's 1. ReactionFlash also leads on iOS requirement (15.5 vs 18.4). Structural Formulas Study's advantage is update cadence (every 5 weeks vs every 4 months) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Structural Formulas Study holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ReactionFlash has 42 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

ReactionFlash ships an update every 4 months, Structural Formulas Study every 5 weeks. The most recent releases landed on November 10, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 level
ReactionFlash versus Structural Formulas Study: the parameters behind the verdict, then further details
ParameterReactionFlashStructural Formulas Study
PriceFreeFree
Rating4.8 (42 ratings)5.0 (1 ratings) — better
Positive reviews80.6% of reviews—
Number of ratings42 — better1
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.5 — better18.4
Further details — not scored
Size40 MB5 MB
Age rating4+4+
DeveloperElsevier LimitedJun Yamabe

Customer experience

ReactionFlash

All ratings42 ratings
Positive95.2%
Neutral2.4%
Negative2.4%
Written reviews31 reviews
Positive80.6%
Neutral6.5%
Negative12.9%

Structural Formulas Study

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ReactionFlash

No in-app purchases

None

Structural Formulas Study

No in-app purchases

Questions

Is ReactionFlash free?
ReactionFlash is free to download, with no in-app purchases.
Is Structural Formulas Study free?
Structural Formulas Study is free to download, with no in-app purchases.
Which has better reviews, ReactionFlash or Structural Formulas Study?
Structural Formulas Study is rated higher. ReactionFlash averages 4.8 out of 5 from 42 ratings, while Structural Formulas Study averages 5.0 from 1 ratings.
Do ReactionFlash or Structural Formulas Study have ads?
Neither ReactionFlash nor Structural Formulas Study shows ads.
Which is updated more often, ReactionFlash or Structural Formulas Study?
ReactionFlash ships an update every 4 months, and Structural Formulas Study every 5 weeks. Most recently, ReactionFlash was updated on November 10, 2026 and Structural Formulas Study on November 8, 2026.

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