Thing required to be able to use this app:
1) open udp port on your phone or wifi
2) your ip and a friend's ip and open port.
i Have tested this on more than one device
Device sized that are comparable :
i have a lot of android devices and have ran it on a moto g and it will auto detect your screen.
my phone was 4.0
Please don't dislike it just because you don't know how to use it,
any issues message on here and ill try to fix them right away.