I think most of the one and two star reviews are from people who don't understand what this does. This is receiving the communications local to the device, this needs a radio, hence the SDR dongle. The traditional way of doing this needed a raspberry pi or a Linux PC, rtl-sdr, and a lot of configuration. This makes the process easy. Where it scores over internet based apps like LiveATC is that you can use it in places like the UK where uploading is illegal. Good for training radcom skills. Would really appreciate saving of channels
Air Band Receiver at Google Play market analyse