Google Maps for most computing devices and offline too

Google Maps launched in 2005, thus have more experience than any other cloud-based mapping service. Apple added their Maps in 2012, use them too! 

blog.google/products/maps/

If you're going to be traveling to rural areas where there may be limited cellular service, download the offline map(s) to your smartphone or tablet before you go: 
(3 dot menu/download offline map)

support.google.com/maps/