AstroVizor is the application for astrologers. It works on Android and iOS phones and tablets. It can create natal chart or transit chart, display tables of planets and aspects. For beginning astrologers it allows to search for interpretations in the Internet (on double click on the planet sign or aspect line).
The appearance of the chart can be tuned on the Charts menu (upper left-hand icon). Size of the ring of planets can be tuned, this size determines also the sizes of planet signs.