Jedná se o kombinaci obojího, viz. press release:
With ROUTE 66 Maps + Navigation users can access map data in various ways. The app automatically downloads the map data needed from high-speed servers to phone or tablet as you go, providing access to the very latest and most accurate maps whenever is needed. Users can also store complete maps on their smartphone or tablet using Wi-Fi before they go on the road, avoiding data roaming charges while abroad and ensuring instant access with guaranteed performance, whatever the local network reception.