What sleep tracking app do you recommend and why?

Pokémon Sleep

"Sleep as android", Pretty much supports most common watches and smart wake up is pretty great.

Snoretracker on Android is a good one. It helped record and identify my snoring . The only issue is it advertised to you often....so that kinda sucks.

I don't use apps like this because I have a miband, I think it does the work better.

Although Pokémon Sleep have called my attention, for the better or the worse.