Hi,
the App seemed to work well with my Samsung Galaxy A3 (2017) on the first start.
But the Internetconnection lacked.
On the second start, there were no more Connection to the Amp and the App froze.
I´ve tried to shut down my Phone and it froze too. Only a soft reset helped out.
The App is no Option for me. There´s still a lot of work to do for the Developers.
Wish U all good Luck in trying the App