Suntimes - Android app (and widget collection) that displays sunlight and moonlight times for a given location.
Visualify - Visualize your top artists on Spotify
Natural Hour - A roman timekeeping add-on for Suntimes.
SYQEL - Bring your music to life
Sol: Sun Clock - Get reminded when it's sunrise or sunset, wherever you travel!
Kaleidosync - Kaleidosync is an all-in-one Spotify music visualizer that is all set to deliver a top-notch music experience with real-time support.