一款天文观星软件，操作极其简单，用户只需将 iPhone/iPad 指向一个方向，软件便会显示该方向一个非常美丽的星图。软件由超过 37,000 张的高清照片组成，不是一般天文软件可比。此外，用户还可以根据周边的光线，调节程式的亮度，以得到最舒适的效果。
• Elegant and simple: Unobtrusive controls and gestures free up the screen for the best sky view yet.
• Rich content: Loads of stunning Retina-quality graphics and original artwork.
• Soundscape: Designed by Mat Jarvis, the most highly featured composer in the award-winning soundtrack for the game Osmos. Stars have sounds based on their temperature and size.
• Useful anywhere: Works with or without a GPS or data signal. Built-in access to hundreds of articles no matter where you are.
• HDR brightness gestures: Dynamically control how bright the sky is to match your surroundings.
• Red night mode: Preserve your dark-adapted eyesight.
• Compatible with iPhone 4, 4S, 5, 5C, 5S; iPad 2, 3rd gen, 4th gen; and iPod Touch, 4th and 5th gen. Sky Guide requires a gyroscope, so it doesn't work with iPad 1 or iPhone 3GS and earlier.
版本 2.1 中的新功能
• Comet ISON: Added a trajectory plot and detailed article for the comet that may dazzle us later this year!
• Choose your own tunes: audio from outside the app now continues to play if you have unchecked the music setting in Sky Guide.
• Bug fixes and UI tweaks