How many aviation moving map applications
Oh do me a favour. The only vaguely useful one for Windoze is Memory Map whose only redeeming feature is its proprietory map format for which CAA VFR charts are available. Whilst it's novel to see your paper chart on a PDA, almost every alternative is better (even those piddly little Garmins I have such disdain for).
For what it's worth, Memory Map will work on an iPhone if you're determined enough. It requires substantial knowledge of Arm architecture, the compiling of wine and qemu source, some dependency tinkering and relevant mapping of the GPS serial device. At the end of the day it's a Unix box and it'll do anything you want given the right knowledge, sufficient motivation and a large pinch of salt to accompany various EULAs.