For watch and receive only I like sentinel from the samouraï folks because it has a functioning tor connection. This allows me to still use a VPN app to hide the tor traffic between my phone and node from my mobile provider (I live in a shithole totalitarian country).
I like bluewallet a lot too but its tor connection doesn't work so it requires orbot, which means that my mobile provider would see my tor traffic. I couldn't find a way to run a VPN app and orbot at the same time, happy to be told I'm wrong.
Nunchuck seems awesome but I don't use it for the same reason as bluewallet.