I was able to install it via wifi directly on to the ST16.
And yes, the wifi does get disconnected when it goes back to controller mode. I had to reconnect to wifi when going back to tablet mode.
The other thing I found interesting is that, I never knew that I the ST-16 was recording the flights( videos) on it. This app actually had access to all those file.
I'll need to read up more on the app, but seems like I can't use current location to start a new mission. (greyed out)
It gives me -previous location and by name options.
Tuna, thanks again for this app.