Comparison

ReactionFlash vs RSS Chemicals

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

RSS Chemicals

Manage your chemical inventory with this cloud-based tool. Easily track containers using barcodes, access safety information, and share chemicals with research groups while controlling access. A complementary web app offers advanced features.

Highlights
  • Barcode scanning for inventory tracking
  • Chemical and safety information auto-population
  • Create chemical networks for sharing
  • Access control for shared chemicals
  • Advanced inventory search
  • Complementary web application
Features
Read full description

RSS Chemicals is a cloud-based chemical inventory management tool developed with a researcher-centric approach. It allows easy tracking and maintenance of containers using a barcoding system. Chemical and safety information, such as hazard codes and first aid, are auto-populated. The app enables users to create chemical networks to share chemicals while controlling access easily. RSS Chemicals includes a complementary web application that works in sync with the mobile app and has additional features such as structure search and import/export capabilities. Features include: • Supports add/remove/track via barcodes and mobile camera • Advanced inventory search based on name, CAS, or substructure • Provides hazard codes, storage, and first aid information. • Ability to share and track chemicals among research groups while controlling access levels Contact service@riskandsafetysolutions.com if you have questions or need assistance.

Screenshots

ReactionFlash4 screens
RSS Chemicals4 screens

Verdict

The call

The clearest difference is review sentiment: ReactionFlash at 81% against RSS Chemicals's 13%. ReactionFlash also leads on rating (4.8 vs 2.2) and ratings volume (41 vs 13). RSS Chemicals's advantage is update cadence (every 5 weeks vs every 4 months). 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

ReactionFlash holds the better App Store score, 4.8 against 2.2. Both are backed by a comparable volume of ratings — 41 and 13 respectively. Written reviews point the same way: 81% of ReactionFlash's written reviews are positive against 13% of RSS Chemicals's.

UpkeepUpdate frequency

ReactionFlash ships an update every 4 months, RSS Chemicals every 5 weeks. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
ReactionFlash versus RSS Chemicals: the parameters behind the verdict, then further details
ParameterReactionFlashRSS Chemicals
PriceFreeFree
Rating4.8 (41 ratings) — better2.2 (13 ratings)
Positive reviews80.6% of reviews — better12.5% of reviews
Number of ratings41 — better13
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.5
Further details — not scored
Size37 MB66 MB
Age rating4+4+
DeveloperElsevier LimitedThe Regents of the University of California (UCOP)

Customer experience

ReactionFlash

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

RSS Chemicals

All ratings13 ratings
Positive23.1%
Neutral15.4%
Negative61.5%
Written reviews16 reviews
Positive12.5%
Neutral12.5%
Negative75.0%

In-app purchases

None

ReactionFlash

No in-app purchases

None

RSS Chemicals

No in-app purchases

Questions

Is ReactionFlash free?
ReactionFlash is free to download, with no in-app purchases.
Is RSS Chemicals free?
RSS Chemicals is free to download, with no in-app purchases.
Which has better reviews, ReactionFlash or RSS Chemicals?
ReactionFlash is rated higher. ReactionFlash averages 4.8 out of 5 from 41 ratings, while RSS Chemicals averages 2.2 from 13 ratings.
Do ReactionFlash or RSS Chemicals have ads?
Neither ReactionFlash nor RSS Chemicals shows ads.
Which is updated more often, ReactionFlash or RSS Chemicals?
ReactionFlash ships an update every 4 months, and RSS Chemicals every 5 weeks. Most recently, ReactionFlash was updated on September 21, 2026 and RSS Chemicals on September 17, 2026.

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