Mobile app that generates a 'Mood Board' from your phone's camera roll

You access the app on your phone. It asks for access to the camera roll, you approve and it returns with a "Mood Board" / collage (like Pinterest). The app tallies up the photo metadata, machine learning analysis, etc. to generate a color palette that represents your life / your year (timeframe could be customizable). <br><br>This would be a good stand-alone app or a feature within a bigger ecosystem like Google Photos. The app saves these collages and you can see how your life has changed throughout the years.<br><br>This idea came to me while listening to a podcast where the guest (a photographer) talked about making this collage of instagram photos every year as a snapshot of their life and travels.