Which android app is best for hacking wifi on unrooted android phone?
There's an app Known as WPA-WPS tester
You can connect to those WiFi networks that are based on the security WPA-WPS with non rooted phones
With rooted phone, you can know the password too
With Non rooted phone, you'll be able to connect but you'll not get the password
First download the app :
After installing you'll see this kind of screen after refreshing(on the top right of the app)