Android - using other Maps for Geocaching app

[+Bazzerbeeza]

I have just bought my first Android Smartphone and downloaded the Geocaching app. On my first geocaching trial, I realised that the Google Map was inferior to the OS Map I had on my GPS so I am trying to cure this problem. I have downloaded the Cachemap UK map to the SD card in the phone but I am unsure how to get the geocaching app to use this or any other map I choose to install. Please advise.

[+Viajero Perdido]

Try Locus Map (free or pro).