Had Sygic on my phone for a short time...got rid of it...It was burning my phone battery down even when it was off.
I have Map Factor as an app on my Nexus Phone, but I use Google Maps...with Data On locally to access Live Traffic, and I use the "Offline Areas" feature with several downloaded maps for road trips with Data Off Most of the time. Using google maps when I cross into the USA
"DATA IS SHUT OFF" using
only the Offline Areas Downloaded maps...updating or adding new areas over WIFI only.
Re: Map Factor...I have it just as a backup with maps of only the States and Provinces I plan to ride loaded...Map Factor Auto updates the maps just like google does with it's downloaded "Offline Areas"
Just be sure you do your downloads and updates over WIFI instead of burning through DATA:
https://www.youtube.com/watch?v=elZ9cndxGO0