2.3.2. User interface
The Android application uses an Action bar across the top of the
screen. Since commonly used actions such as “Load” and “Subtract”
are always visible, the user can quickly control the application.
However, because of the Action bar, the application is only supported on devices that have Android 3.0 and above. Less common
actions such as logging into Dropbox or peak selection are accessed
through the “action overflow” button of the Action bar, so not to
overwhelm the user