San Francisco Tour Guide 與 City Explorer San Francisco 使用情況與統計

With City Explorer (TM) you can explore a city in your own time, at your own pace. Get tours of San Francisco that explore the city's history, art, and architecture. Fully downloadable on your smartphone or tablet. Available anytime, anywhere -- even preview a neighborhood before you go. Note: Continued use of GPS running in the background can dramatically decrease battery life