"Awesome" writes a reviewer!

More reviewers comments!
"I have used it for all of my exams so far and it is extraordinarily helpful."
"This is the best investment that you can make to visualize the reactions. There are a ton of them and they are AWESOME!!!!!"

With over 160 animations that make up over 3 hours of videos, Tap OChem puts organic reactions and concepts at your fingertips!

Quickly understand organic chemistry with almost 160 animations of the most important concepts and reactions! Critical in prepping for the MCAT, PCAT, GRE, OAT, and DAT.

Another reviewer writes “Covers all of the major topics and the videos help me visualize the details of the molecules and reactions”…“Could almost replace a whole textbook.”

While we never claim to cover an entire organic chemistry class, with content added in each update (major free updates each year since publishing five years ago!), Tap OChem is the app that delivers!

The reactions and concepts included are many from the one year sequence of undergraduate organic chemistry that is offered at all major colleges and universities. Students have told us that this app was essential in their preparation for the MCAT. Whether you are currently in the one year sequence of classes or reviewing for the MCAT, or PCAT, OAT, and DAT, this app will help!

Designed by two award winning chemists with over 44 years of combined experience teaching at major universities, Tap OChem makes organic chemistry reaction come to life for each included reaction or concept. The following animations are currently included: Substitution reactions (20 animations), Elimination reactions (11 animations), Alkene Chemistry (14 animations), Free Radical Chemistry (3 animations), Alkyne Chemistry (6 animations), Epoxide chemistry (4 animations), Benzene chemistry (10 animations), Diene Chemistry (8 animations), Carbonyl Chemistry (8 animations), Key concepts (61 animations), and Molecules in Motion (35 animations). The Concepts section includes valence bond theory, molecular orbital theory, electrostatic potential maps, alkene stability, dienes and stability, conformational analysis of alkanes and cyclohexane, etc. We've just started adding information on spectroscopic topics! Two animations were added with one focused on the introduction to IR spectroscopy was added. We are developing and updating more animations for future updates!

Each animation has an accompanying text that drills down to the main facts of each reaction or concept. These are in FULL COLOR! They are short, handy, descriptions with important information regarding each reaction or concept. In the case of reaction animations, the concise scrollable text descriptions include electron pushing.

We will continue to update the app with future releases.

Tap OChem is native to both iPhones and iPads! In addition to the animations being very sharp on your iPhone and iPad, they are of excellent quality when projected (iPhone 4S and iPhone 6s, 6s Plus, 7, 7 Plus, 8, 8 Plus, X, and later, iPad 2 and later, using appropriate adapters) in a classroom.

For the iPhone 6s and later; and iPad Air 1 and 2 and later, an appropriate adapter is needed like Lightning Digital AV Adapter (this is an HDMI adapter), or a USB C to HDMI adapter, or a Lightning to VGA Adapter.

Please visit for further information.

What’s New

Version 4.66

Added 6 new animations and improved 5 animations! We've improved one reference sheet and added a new one. Both relate to SN1 vs SN2 vs E1 vs E2. Five of the new animations topics are on carbocation rearrangements. The other topic is on SN1 reactions with allyl halides! See the "Help>Whats New" information for details.

Ratings and Reviews

4.5 out of 5
23 Ratings

23 Ratings

SoccerProdigy ,


There are many things this app is lacking. Very, very useful for the information it does cover. And the 3D explanations w/ narration are great. But again, this app lacks other very important key subjects within Organic Chemistry. If it was more detailed, especially pertaining to college level curriculum, would be a fantastic app.

Johann_G ,


This app is a great learning aid. It covers a wide breadth of organic chemistry content that has been taught in my college course. The 3D animations make chemistry accessible for me.

Aristonax ,


This application is essential for anyone studying organic chemistry. All the reactions and concepts are organized to make everything easily accessible. Being able to watch the molecules move and transform helps tremendously in understanding the reactions. Thus, I highly recommend this app.


Tap OChem, LLC
3.3 GB

Requires iOS 12.4 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You May Also Like