Pedro,
I do not know what you are after in the way of functionality in GPS software, but there are numerous free programs on Google play.
Download a few and have a play with them.
The latest three I have been trialling are Alpine Quest, E-walk Free, and My trails.
Andozic is not too bad to use.
Some of the ones I have tried in the past you need to down load the area prior for offline use, where others will have basic maps already.
For on road I use Navigator - but it can be difficult to find addresses due to it sometimes wanting to know cross roads.
There are probably better programs out there than the ones I have listed, but I am not willing to pay for one yet. I have come across some very good programs but they are a bit too technical for me - I do not have the interest in converting different file formats and overlays.

