Autostart sleep tracking at specific time

From Karen on 2016/05/17 11:25:00 +0000

I keep forgetting to turn sleep tracking on. I go to bed around the same time on week nights, so it would be awesome to be able to set it to start tracking on its own. That might end up storing erroneous data on occasion, but it’s better than forgetting to turn it on.

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/13873890-autostart-sleep-tracking-at-specific-time