What's the difference between Sky Safari Legacy (free) and the Sky Safari 7 basic ($5) app?
Here's the description for SS7 basic:
SkySafari 7 Basic
SkySafari 7 shows you 120,000 stars, 222 of the best-known star clusters, nebulae, and galaxies in the sky; including all of the Solar System's major planets and moons, and more than 200 asteroids, comets, and satellites.
But I could not find a description for Sky Safari Legacy.