Ive been a professional astrologer for over 30 years and use both western and Vedic systems. There are other, pricier apps (AstroGold, for one) available that offer similar chart calculation options but, none of them provides an ephemeris view of a whole month at a time and, one that is so highly customizable as well. Other apps also tend to be much more interpretation oriented which is not as useful for professionals. Just focusing on the calculation of the astrological tools in an elegant and streamlined interface works great for me. Ive checked the accuracy of the ephemeris and charts with professional PC programs and find this app to be as good. No crashes yet. As a request to the developer, I would gladly pay extra if you were to offer a Vedic astrology module as an add-on. Even just Dashas (to 3 levels), Varga/Harmonic charts and Nakshatras added on would make this my one stop go to app. I truly believe that the astrology of the future will be a combination of western and eastern techniques and, I hope this app will be at the forefront of this evolution.