Pretty useless
This app is completely unreliable. I have been using it for a month and It had me asleep for 22 hours one night, and last night although I was in bed from 11p.m. and woke up at nine a.m. the app changed my wake-up time to three a.m. It's constantly giving me warnings that I should see a doctor, and a lot of the text is nonsensical e.g. ' you woke up at 3:15 a.m. the woke up time since you've been with shuteye '. I reinstalled the app because I thought these were software errors and lost all previous data.The information given about sleep is really basic and childish.