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Hi there! Earlier this year, Google held a competition in which you could win a trip to I/O 2016 by submitting an Android Experiment.
I didn't win but this is my submission , called "Veterondo: Abstract Weather". People agree that it looks very pretty, though!��
It gets your local weather and creates Material Design-inspired palettes as well as chords when clicking the dots. The Play Store listing goes into more detail about its creation, if you're into this sort of thing.
It's also open source! You can download the app here:
https://play.google.com/store/apps/details?id=com.saladdressing.veterondo
The source code is here:
Just realized that I didn't post my own experimental app but here I am asking other people to post their submissions.
It's an app that retrieves the weather from openweathermap.org according to your location and generates color palettes related to the weather and also chords. Not exactly a big deal but I tried to create some loveliness.
https://play.google.com/store/apps/details?id=com.saladdressing.veterondo