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NOTE: This app is no longer maintained.
Having trouble falling asleep? I did, and listening to calming music helped me. Sleeply as of now, contains 8 sounds: Sounds of the forest, Ocean sounds, Rain, Shamanic meditation, Delta waves, Lucid dreaming, Autumn wind, Enter the void. The user interface is beautiful and it supports playing in the background as well as a sleep timer configurable between 15 minutes and 3 hours.
Tracking: The application tracks and reports your activity to somewhere – usually either without your consent, or by default (i.e. you’d have to actively disable it). It’s commonly used for when developers obtain crash logs without the user’s consent, or when an app is useless without some kind of authentication.