As if this app could hack the password that fast.
I call FAKE without testing... BUT i might be wrong!
I'v personally made scripts in the past for auto hacking wifi.
The fastest i was able to do it was about 2min from start to finish but that was two passwords at once.
At the time i would need about 10k packets. If its possible to do it with less packets now, then maybe that app is legit.
I'm still not testing some random app from youtube.