This application send personalized offers for you about concerts near you (in Hungary). At the first start you can mark your favourite bands, and places. After that the application list and send for you notifiactions about your bands nearest concert. It also has an intelligent algorithm, that offer you other bands, based on your previous choices. It has just about 2000 downloads, but high, 4.57 average rate.
https://play.google.com/store/