I have started to use https://play.google.com/store/apps/details?id=ie.macinnes.tvheadend however in the screenshots you can clearly see listings and categorisations/genres on the left.
I have been unable to get more than the "All channels". Does anyone know how this is achieved?
It works for me. My guess is those categories are based on your guide (EPG) information. So make sure that your EPG grabber supports that. I think you can check it in the web interface under the Content Type column.