To operate the Selfie Stick no app required. The Bluetooth remote control has been connected after switching on with my Samsung Galaxy within seconds. The first Selfies so nothing stood in the way.
I have tried, as far as I can take off the rod until the whole becomes unstable. He was neither for nor buckled. Even with fully extended rod not wobbling could be seen. Even when trying to tilt the smartphone to the right or left, this was in a stable position. The remote shutter works without delay and is easy to use.
My Selfies are top. None of them blurred and finally one sees even a bit more of me, not just the neck and head. For the price we paid a certain good and sensible purchase that I highly recommend.