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Any thoughts on this? Perhaps the ability to use maps from different sources, even if it means larger downloads?
If you think larger download is the answer, you will be doubly frustrated.
One GPS app I tried (MotionX) required me to download >300MB for a small city (taking more than 6 hours) and it would not even allow me to download a map for a state (which will take about 70 million tiles or more than 4GB of data). It is not even recommended to have maps of more than 2 cities as the app takes exponentially longer and longer to add more maps. I was in China for a week and MotionX failed to download the map! It was a major FAIL.
PocketEarth is different. It uses Vectored Map technique which I believe is the most efficient! I was able to download maps fast and without restriction!
Most GPS/Map apps uses OSM. The quality of maps is with OSM.
I had once suggested to PocketEarth to use Garmin’s map data. Garmin also uses Vectored Map technique but I dont know if it would be compatible with PocketEarth’s app. However, Garmin’s maps are expensive. Many will not be able to afford it.