Eero, Markus and Petteri are in the programming phone team. They did an app by which you can send text to the spinner and got it finished in just few days.
The team used MIT App Inventor 2 to make the first version of the app and planned the look of the app at the same time they were doing that. Afterwards they made the second version with Android Studio. They also worked together with the programming phone team.
The team is very happy with the final result.
Here is the link to the website they used to learn how to use Android Studio.