Want to know the time and the direction the sun rises and sets? Twilight compass provides the directions and the time of sunrise and sunset by using the digital compass and GPS
built in iPhone 3Gs.
Just start the Twilight Compass to get the information, you will know the information about sunrise and sunset.
Twilight Compass also shows the heading of a user-defined landmark, which can be used as a simple navigation tool
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拍晨昏的好工具,利用iPhone 3GS內建的GPS及電子羅盤,告訴你今日或指定日期的日出日落時及方位。也可以指出自訂地標的方位。