A book about molecules, and a chance to touch, stretch and twist them!

Molecules by Theodore Gray is the extraordinary sequel to The Elements, the bestselling book and app. It continues the story of the elements to show how they are assembled into the rich diversity of compounds, chemicals, molecules, rocks, and stuff that make up our world.

The app includes an important world first: a touch-interactive molecular dynamics simulation that lets you poke and prod hundreds of different molecules, seeing how each one reacts to your touch. Molecules are not static things – they twist, turn, vibrate, and spin in an elaborate and beautiful dance of quantum mechanics.

The app incorporates the NAMD simulation engine developed by the Theoretical and Computational Biophysics Group at the University of Illinois. These are serious, scientifically accurate simulations. A few minutes playing with them will give you a deeper intuition about the true nature of molecules than years of study on paper. And while they are serious science, they are also a whole lot of fun to play with!

In addition to the amazing wiggling molecules, the app contains the entire book of Molecules, with all the objects interactively rotatable so you can see them from all sides. Going further than The Elements, the app includes dozens of innovative and intriguing “still life videos” that reveal the true nature of substances through close-up interactive video.

Features include:

• Try out the first ever touchscreen-interactive molecular dynamics
• Bend, squeeze and shape 348 different molecules using multiple fingers
• Increase or decrease the temperature and see how molecules react
• Read the full text of all 14 chapters of Molecules by Theodore Gray
• Understand the movements of molecules in a special chapter for the app
• See over 500 videos and rotations of incredible objects photographed by Nick Mann

Find out more about the app and its creators:

If you like Molecules by Theodore Gray, don’t forget to rate it and leave a review.

What’s New

Version 2.0.0

Bug fixes and optimisations.

Ratings and Reviews

5.0 out of 5
7 Ratings

7 Ratings

Stephenbells ,


This is the third app in the series after the elements, elements in action and now this.
If you want to use your iPad for more than "just" games then this is the sort of thing that you should consider, I have all 3 now and can recommend them.
I was, to be honest expecting this to be around £2.50, the cost of elements in action but there has obviously been a great deal of effort gone into producing this. I am only around 10 percent or so through it but is excellent and seems pitched at around the right level for a non academic (but not an imbecile either) like me to understand. They all use a lot of memory so perhaps not really suitable if you only have a 16g iPad.

farlet ,

Bit Pricey but Very Good

If you have "Elements" and enjoyed it, then you must get this too. It's not a text book it's a marvellous, educational, entertainment for anyone with even a little interest in science and chemistry. It may seem a bit expensive but it looks gorgeous and the amount of work that has gone into this is obvious. I think it's what iPads were made for and so I think it's worth every penny.

rsharma467 ,

Gray writes with style

This is an app I would recommend to everyone who is interested in physics, Theodore Gray writes with the approach of a master physicist and matches it with the flair of a master craftsman...fascinating. Five stars.


Touch Press Inc
799.1 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Infrequent/Mild Alcohol, Tobacco, or Drug Use or References
Infrequent/Mild Medical/Treatment Information


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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