The app did work, at first but over the last month it's completely failed. I've had to uninstall and reinstall the app 3 times since I received my hearing aids in December. Today I tried to connect to switch programs and it failed so I once again uninstalled and reinstalled and now the app just crashes and my phone tells me that there is a "bug". At least the Bluetooth function is controlled by the phone itself so phone calls and audio can still be used with hearing aids.