Originally Posted by
IPassGas
I am used to google maps which can now be downloaded for offline use, so I don't see an obvious benefit for these other apps.
Unless things have changed recently, gmaps is unreliable for offline navigation. It requires connectivity to compute a route, and if you deviate from a route set while you were connected, you'll loose navigation.
There are several great offline navigation apps. I use Locus pro / Android.