Worked perfectly until the last few months

Ive been using this app since I got the 6s last fall, and until recently it was amazing. I would wake up every morning feeling more refreshed exactly as advertised. It got to the point where I would set it even on my days off just to ensure that I woke up not feeling groggy.

However, it is now completely unreliable.

The app appears to randomly crash in the middle of the night on occasion. Sometimes I see a notification in the morning after no alarm, sometimes I see nothing and there is no alarm. Sometimes it works perfectly. I now have to set a backup alarm in case this app decides to fail, which is extremely disappointing. I would happily pay for the extra features to support the developer, however that will not happen until these issues are fixed.

TimmyToughnuts about Sleep Cycle - Tracker & Sounds, v5.2.1