Not worth it

It only blocks Bluetooth steaming if the app is in the foreground. Once you switch to another app then things will revert back to what they were. There is an option on the device that does what this app does. Go to the task bar and swipe to the right to get to the audio controls. Swipe again to get to the audio volume and source. From there you can choose where to send your audio. This does not Chang if you switch apps. Save your money

Dozer 2 about A2DPblocker - Bluetooth Mono, v1.3