Reasonable
I have tried about four other Nav apps, and this one actually works. -- Big complaint: sometimes the voice guidance for inexplicable reason(s) likes to turn itself off at moments when it is needed most. Voice guidance is not the default, but must be selected each time a new route is selected, and even then its not guaranteed. Oddly, to get voice guidance, one must select voice off. Trying to get help on this problem got no response.
Dr. Jazz about
GPS Navigation (Sat Nav), v7.2