Pillow 自動睡眠跟踪‪器‬ 4+

Gonna buy the full app but something has to be clear before I do that. While setting the mode to be auto, how does the app woke me up at a desired time?
For example, I go to bed at midnight, planning to wake up by 7:30am. I thought by setting my sleeping goals at 8 hours, and turning on smart wake up and choose the time to be 30 mins, the app would wake me up anytime within the 30 mins of my sleeping goal, provided that I’m not in the deep sleep stage, but that s not the case, i don’t see anything going off, not the alarm, not any vibration. So how does it actually work? Am I missing something? In what way does it wake me up? I’m using it with my Apple Watch.

Hello! Kindly note that when you are using Pillow's automatic mode to track your sleep it is not possible to set an alarm due to current technical limitations. If you select one of Pillow's manual modes that support the alarm function then the "Smart Wake up" feature will wake you up at the best possible moment, i.e. when you are at a light sleep stage, within the chosen 30 minute window. If you require further assistance please do not hesitate to contact our support team. To contact support: Open Pillow on your iPhone → Tap on the Settings icon → Select ‘Helpdesk'

I had been using Fitbit for sleep tracking for 2 years before I decided to switch to Apple watch. After doing a lot of research, I learnt that Pillow and AutoSleep are supposedly the best apps for sleep tracking on Apple watch, so i got both. For Pillow, though it is relatively more accurate than Autosleep, there are still some problems. I remember waking up quite a few times in the middle of the night, but the app does not detect that. I wonder why? Also, the time I wake up is not accurate at all as well. I snooze my alarm and just stay in bed for a few mins, but the app still thinks that I am sleeping. Please advise how to work on the two things.

Hi! This review refers to a very old version of Pillow. We recommend that you update to the latest version to enjoy the latest advancements and features.
Getting unexpected sleep analysis can be caused if Pillow has not been given permission to the required Apple Health categories, faulty sensors, incomplete training, low battery or connectivity issues unrelated to Pillow. We recommend that you contact our support team to help find the cause of this issue in your case and resolve it so that you can enjoy and benefit from Pillow!
To contact us, please use the Helpdesk option under Pillow's Settings.

I'd love to give a 5 start review, but the gestures used to navigate the app conflict with the iPhone X gestures: Swiping up on the start button often gets confused with swiping up to close the app and changing the sleep modes by swiping left right gets confused with changing apps. This however is not the developers fault, they will just have to tweak the UI a little and this will be fixed.

Hello! We’re glad you are enjoying Pillow. We're working on re-design of Pillow that will address the mode switching in Pillow as well. Thank you for your patience!