Nice, got a name of the mount?! I tried my old iPad but it is too old for the app apparently.
I am going to use a Galaxy Tab A 10.1 instead.
Just make sure your galaxy is smaller than the max opening of the mount.
Again, that is just a cheap mount and they make better ones but I was just trying to get in the game for the lowest price at the time. I may upgrade to a stronger one this summer.