The Android app does not have a settings button and pairing is not required.
Simply go to "scan" and hit the scan button to begin scanning. This pairs the scanner with your mobile device.
At the moment, we have not published the turntable feature as there are still some things we are working on but it is coming very soon.
The app is still in Alpha testing but we are constantly adding features to it to bring it up to par with the iOS app!