I installed yesterday and I love it. Simply because it's the only one out of all the ones I used that actually detected my trips to the loo. No settings, it just picked it up. Looks like it was designed by Apple and is about 4mb! Uses coreML too.
NapBot - Sleep and Nap Tracker
NapBot is an automatic sleep tracking and analyzing app for your iOS and watchOS devices. It uses on-device Machine Learning to detect and understand your sleep. * Sleep Tracking NapBot uses machine learning to automatically track your sleep. * Detailed Sleep Analysis NapBot presents detailed...
apps.apple.com