A new versions of Sky Safari (5 Plus and 5 Pro) have just been released for iOS. The standard version for iOS and Android versions are coming.
Currently the two released versions are 1/2 price, i.e. Sky Safari 5 Plus is US$7.99 (AU$12.99) and Sky Safari 5 Pro is US$19.99 (AU$30.99). Unsure how long they will be at this price.
Description:
SkySafari 5 Plus shows you 2.6 million stars, and 31,000 deep sky objects; including the entire NGC/IC catalog, and 18,000 asteroids, comets, and satellites with updatable orbits. Plus, state of the art mobile telescope control.
SkySafari 5 Pro includes over 27 million stars, 740,000 galaxies down to 18th magnitude, and 620,000 solar system objects; including every comet and asteroid ever discovered. Plus, state of the art mobile telescope control.