[odux]

I use BitWarden on iOS and it is pretty much same as the default iOS auto fill (which is iCloud?). It uses the system auto fill service and the detecting of password fields to show the auto fill option and filling the password is done by that service, not BitWarden. You can actually use two active auto fill services (say BitWarden and iCloud, I did when I was testing the waters), you will get a prompt to choose which one you want to use.