波士顿离线地图(美国波士顿离线地图、地铁图、旅游景点信息、GPS定位导航)

This APP includes Boston offline map, high-quality subway map and useful information for traveling in Boston. GPS locates your current position in real time, guaranteeing you will not lose in Boston.
The most important feature is: NO Wifi, NO 3G and NO Data Roaming needed. 100% Offline. Save you expensive roaming service fee when you travel internationally. With this app, you can easily travel in Boston without any guide.