I will add that my experience with Adobe products has not been good. Reader is an absolute PIG and Air is pretty much a joke. The IT staff here has to support lots more from Adobe and they hate every minute of it. These experiences don't give me much confidence in Adobe products.
>If you implement via Cordova[Phonegap] or similar [half]-HTML/JS using the built-in browser as display engine, which solves some differences between iOS and android by being just webview-based (yes, Google branched) at least part of that is still portable and not too far away from IE on WP8. Re compelling UI: IMO iOS apps shine at least partially because of the tighter range of display options to consider, partially because of the tighter range of OS variations to consider and partially probably because on better chances of monetizing per individual user/greater monetization of overall app store. Blaming poorer UI of android - which DOES happen, but not always - on Java "reasons" IMO comes after above mentioned reasons.
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer