Mechanisms by Alchemie – Organ

In-app purchases
136 reviews
Content rating
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About this app

Mechanisms is the first app for organic chemistry that allows you to practice and learn reaction mechanisms by moving and manipulating electrons! 90% of college students find Mechanisms to be beneficial to their studies ー don’t get left out of the equation!

See, touch, and practice how chemical reactions occur at the particulate level in an
intuitive way.
As you work through each exercise, you will receive hints and feedback based on the moves you make - so you learn as you practice and apply concepts. Mechanisms also provides you with real-time assessment, giving you a measure of your performance and comprehension every step of the way.

Mechanisms – HIGHLIGHTS
- FREE to use
- PRACTICE 40 different chemistry-based puzzles
- INTERACTIVE studying 一 drop your paper and pencil
- VISUALIZE mechanisms, electrons, protons, molecules, bonds, reactions, and elements!

An Interactive Way to Learn Organic Chemistry

With content developed to complement the organic chemistry curriculum of top universities, Mechanisms offers a new way for you to practice, learn, and master important concepts in organic chemistry. Our content library will continue to expand, with new puzzles and modules in development.

The introductory set of Mechanisms puzzles include 40 challenges regarding chemical structure, acid-base reactions, addition reactions, and a survey of carbonyl reactions. All these puzzles include hints and videos to help you understand organic chemistry better.

Built By Award Winning Educators & Developers

Created and designed by an award-winning, research-backed, National Science Foundation-funded team of educators and game-developers, Mechanisms combines curriculum content from top universities with innovative and thoughtful design.

Mechanisms – Subscription & Pricing

The Mechanisms Full Access subscription will include reactions that cover substitution, elimination, electrophilic aromatic substitution, and specific reactions of the functional groups of oxygen. This broad range of Mechanisms puzzles will take you from early concepts in semester one to the toughest multi-step reactions of semester two.

The price is $9.99 for a 6-month subscription purchase and will be applied to your account on confirmation. Subscriptions will automatically renew unless canceled at least 24-hours before the end of the current period. You can cancel anytime from your payment account settings.

- OR -

You can acquire full access to all mechanism puzzles and future updates with a one-time purchase.

For more information, see our Terms of Service and Privacy Policy, links below:

Terms of Use:
Privacy Policy:

Download Mechanisms today! The first interactive tool to learn & practice organic chemistry
Updated on
Oct 24, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

129 reviews
Kristian Schlick
July 17, 2020
Love the idea, needs a "repeat progress" and/or "clean up structure" button to really see the electrons in motion. That way, the dance can sink in more. Also great if static curved arrows could be featured at the end of each step so that students can connect what is done to traditional paper- based mechanisms.
9 people found this review helpful
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Alchemie Solutions, Inc
July 17, 2020
Hi, Thank you for taking the time out to send us your suggestions. If you have any other suggestions, please write to us at We would love to hear from you.
A Google user
April 15, 2019
the idea is a 5 star idea but the implementation is fairly buggy. the collision is buggy. I'll create a bond and have molecules contort in ridiculous manners that make it difficult to shift electrons. for larger molecules they're supposed to reorder when you make a bond, but sometimes I'll just get a cluster of molecules that are impossible to untangle. i restarted a problem several times until i eventually managed to complete it. there are other bugs but this review is too long.
14 people found this review helpful
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Alchemie Solutions, Inc
April 15, 2019
Hello Guy, We really appreciate your feedback! We are really sorry to hear that you are having difficulty with the app. Developers have been made aware of this and will begin to address this issue very soon! We would like to hear more about your other concerns at to see if we can correct some of these problems you've experienced.
Joseph Bobacher
September 5, 2023
Since the recent update. It is broken and freezes on the blue background before the Play button. I'm a long time user. I love this software. I want to use it for a small class for assignments. Please fix this ASAP.
5 people found this review helpful
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What's new

- Updated content
- Improved offline reliability
- Compatible with latest version of Android
- More support for non en-US languages