Hi,
My father (VK4AES) uses the Android RRC-Nano app all the time. He has cancer and didn't have the energy to get to the ham shack any more. He used the MicroRig for a while (in hospital) and it was absolutely brilliant (with TS-480 head).
The Nano app has actually changed his life as he has started running a net in the mornings again from the phone.
The only criticism is that the phone mic is too sensitive and overloads if you speak too close. You can turn the radio input down but then I can't use properly from the TS-480 head.
I myself, have a Galaxy Express and the features work except audio rx (tx is fine), I have tried different settings but same result with various WiFi and hotspots etc. My father's phone (Galaxy S5) has no issues except mentioned above.
What happens after the one month trial? We have to keep this app going
Cheers
Leif
VK4LES