Pocket Stars is a high accuracy star chart, ephemeris, and Celestial Navigation calculator for the Pocket PC.This version supports ARM and XScale processors. This includes ALL Windows Mobile 5 PocketPC, PocketPC 2003SE, PocketPC 2002, all PocketPC Phone Edition devices, and PocketPC 2000 devices with ARM and XScale processors. This Over the Air (OTA) version is designed to directly download to your PDA without requiring use of a PC or ActiveSync.