the author of this app says:
Basic4ppc is the most simple and affordable way to develop Mobile applications. Develop your applications using the desktop or directly on the mobile device. Basic4ppc supports WM6.0, WM5.0, WM2003 and Pocket PC 2002. Basic4ppc creates executable files without any runtime files needed.
Limited time offer: Purchase Basic4ppc V5.00 (including all components and features) for only 39$.