AstroSwami FREE This free app uses both Vedic and Western Astrology. It will tell you everything you want to know about your sign and its ruling planet, plus give you some predictions!
Moon and Stars This free app has sun sign symbols, an ephemeris, birth chart calculations and sabian symbols as well as many more astrology tools. Not for the inexperienced astrologer.
Astrology Guide and Quiz This costs US$1.29 and is a great way to learn over 200 astrology concepts. It's a quiz/flash card app with a built in astrology dictionary. Great if you are studying astrology!
AstroMatchup MAX This app costs $5.99 and will give you a full compatibility reading. Also if you take the time to rate the app you'll get a free membership to simplyastro.com worth $25.
My Horoscope This free app gives daily horoscopes for all 12 signs by an astrology expert. You can share your horoscope to Facebook or Twitter. It's updated daily and good for an astrology novice.