Lastpass does this, but works with apps as well. Third party password managers are absolutely underrated, because most of them are truly cross-platform.

If you create a Netflix account on your desktop in Chrome, it can generate a password for you, or auto-grab whatever password you typed in, and will autofill that password when you open the Netflix app on your phone. (Based on a built-in association between "netflix.com" and the Netflix android app.)

Super handy feature when you get a new mobile device and need to get logged in to all your apps for the first time.