I plan to travel to France this summer and rent a car for my convenience. The trip might last 12 days. However, I don't want to buy a GPS with France map nor rent a GPS because this cost too much and I may never use it again afterwards.
I have a Garmin GPS only with US maps, I am not sure if I can install the France map with a cost less than $10. Hence, I was wondering if I can download a GPS map for my android smartphone? If possible, where/which app should I download?