First, Check out this SWEET walk-thru of the ATOM platform.
How to create an app icon on your home screen (watch the video above to see this in real time)
There is no iOS or Android app at the moment. You will need to access it via the web browser. Once you log in you can create an icon on your device by following the steps below:
iOS users
Launch "Safari" app
Login to your account on trainatom.com
Click on the [share/export] icon
Scroll to the bottom of the menu
Click on "add to home screen"
Click on "add" in the top right of the screen
Android Users
Launch “Chrome” app.
Open trainatom.com
Tap the menu icon (3 dots in the upper right-hand corner) and tap Add to the home screen.
You'll be able to enter a name for the shortcut and then Chrome will add it to your home screen.