Dear Alan,
I am very glad that you took a look at our app. And your questions gave the right advice immediately. We need to write little manual when first app launch.
Let me pls clarify a little right away. At the first screen it is possible to choose the language (Russian or English) for further data and info displaying. Also at this screen there are Earth and Mars icons for our web site launch and Mars surface condition settings respectively.
A couple of sentences to clarify the last point. When we begin to do this app we were just starting to explore DroidScript and wanted to create a simple surface-level indicator to highlight DroidScript's capabilities—specifically, working with sensors and seeing immediate results as the smartphone's tilt changed. Then we decided to add another smartphone sensors to the app and it expanded to include a light intensity indicator and a compass, and later a timer was added as well. All these modes it is possible to change at the the top-left button and subsequently appearing. At the top-right button and subsequently appearing menu and brief descriptions of modes are provided here.
However, the concept eventually expanded somewhat, and the app evolved from a simple set of tools into a compact, visual educational demonstration describing various physical conditions on Earth and Mars. It isn't finished yet, but we plan to complete the display of the differences later on. E.g., a different droplet runoff rate due to varying accelerations due to gravity, compass will not work on Mars due to the absence of a magnetic field etc.
The droplet itself on the screen shimmers with various colors because it makes it more interesting and conveys an added sense of its light sensitivity. But it work with random color calculating depending on the accelerometer readings.
Maybe it's become clearer now. But it’s really great that you took a look at the app itself and shared your thoughts.
Have a nice day and week!
Best regards
Dmitry