S ky Tonight comes from Vito Technology, the same company which brought us Star Walk 2, and like that app it provides a view of the night sky and the wonders you can see in it. At first glance, you’d be forgiven for wondering whether someone had slipped up and accidentally released the same app twice. They both depict the night sky, both allow you to raise your camera to the heavens to identify something and both let you look up information on what you’re looking at.