IMHO nobody is going to devote significant resources to writing an Iphone app for flight plan filing.
Very few pilots have Iphones and only the most fashion conscious or expense-funded people carry one - given the ludicrous cost of the contract.
Most heavy business GSM users have Blackberry type devices.
If any effort is to go into R&D it should be a simple HTTP submit form for the ICAO flight plan form. Then
everybody with mobile internet can use it.
And EuroFPL delivers that already - for pre-validated IFR flight plans.
The real trick is doing it for VFR flight plans - "somebody" has to solve the addressing issue because one cannot really imagine a "phone" user typing in a string of EGxxxxxx addresses (and where is he going to find them anyway, if all he has on him is the phone?).
So - to rephrase... the challenge is not really in developing a web form for efficient FP filing. It's already been done. The bigger challenge is to solve the VFR addressing issue, and solve it for free because 90%+ of UK PPLs will not want to pay for a service.
Homebriefing could no doubt knock up a simple 320x240 web form for FP filing, but a) few UK PPLs would pay 4 euros per FP and b) the resulting VFR FP would anyway be merely forwarded to the very same airfield where they told you to use AFPEx in the first place
