There are no instructions in the app. They assume that it is intuitively obvious. So, on my iPhone, I used my intuition to set up a sleep session. I saved a narration and a music track to use if I woke up during the night. The reason for saving the tracks is that I switch off my router at bedtime. I woke up during the night and tried to play the sleep session but neither track would play. So I tapped on Restart and it shut down. When I opened the app, it asked me to Subscribe or Restore Purchases. This, in the middle of the night when my router was off. An app that is supposed to make me sleep better made me frustrated, angry and sleepless. There are also lots of problems when I try to use it on my iPad. Music tracks suddenly stop after a few minutes. Changing the track results in it being played simultaneously with the previous track. This is an experimental app that shouldn’t have been released to the public. They hope that you won’t find the bugs in the three-day trial period. So why are there so many five-star ratings? Obviously because the visuals are so attractive. I will be asking for a refund.