This is my opinion, and I may have mis-interpreted your query but....

Not that I'm an authority on the subject... in my experience, few of the people I know from the cell phone business, ironically even those working in the brick and mortar cell carrier locations, as well as most in the related tech sector do not use iPhone nor iPad, save for those addicted to the apple fruit. However, I don't know your customers' user base so it may be something to look into, if that is one of the significant devices the users utlilize for accessing the site(s). Statistics for the sites should tell you the user-agent strings for browsers accessing it and if it's 15-25% iPhone/iPad related then you may be onto something. However, any well designed site should be able to take into account multiple browsers, including mobile, and such leaving what you are seeking to be more of an "app" than a site modification/module.

I'm in the USA.



And I think I might have mis-spoke, or at least left myself to ambiguous interpretation. I meant to say that few people I know use the iPhone or iPad in the industry I work. Most I see are Blackberry or older WM6+ devices, and laptops with air-cards.