1) Probally you're trying to put krpano in a UIWebview (basicly a safari browser simulator) but If I remember correctly, there are issues of this component not properly sending some javascript events, heigts, widths. I remember goodreader had issues with the gyro for instance.
2) Ipad has lesser memory then for instance a desktop, this could cause some crashes.
3) your app probally wouldnt get approved by apple to go to the appstore (this is the only legal one to get an app, even its free on an ipad, unless you want to jailbreak an ipad for every viewer ;)).

You dont need opengl. krpano uses HTML5 CCS3 3d transformation, default in a safari/chrome browser. I reckon uiwebview has this same power.

1. krpano => ment for webbrowser (uses html5 3d capability or Flash 3d) => You need something that simulates a browser => only thing I know is UIwebview https://developer.apple.com/library/ios/…/Reference.html
Stuff simulating a browser is never 100% the browser.You'll run intoo issues. People use goodreader to view an offline panorama, but that has bugs too (think it alsoo uses uiwebview).

Other way is writign your own panorama viewer in objective C. Not to difficult with basic functionality, but youll wont get the krpano experience

2) apple has some guidelines + registrer a developer key ($100/year). Apple doesnt want their appstore too cluttered. An app that shows a few panoramas would not interest many people (depends on your idea though)
some tips: http://mobiledevices.about.com/od/mobile…e-App-Store.htm

Best way to get it on an ipad is too make it just a regular webpage that gets updates frequently with the latest panoramas/stories. create a bookmark icon for your website. If a person bookmarks the website, he gets an app like icon on his ipad. This would work exactly the same as an app but you still have full potential of krpano. Only diffrence is that the user has to bookmark it to get an icon, instead of finding in an appsore and downloading it.

Well, i think its the only option :P apps are overrated, the word app is (mis)used everywhere. I cant understnad how something that works with 1 click through a bookmark, has its own icon and works 100% the same, has to become an app available through the appstore. You aren't allowed to sell a tour of krpano as an ipad app, so if it's free already, then why go through so much hassle and cost. Only visible change would be, that you wont have an adressbar ;p

KRpano works without any problem inside UIwebview in my experience.

It is also compatible with Phonegap (easy framework to create apps from html/js, also based on UIwebview).

You would'nt have any problem with Apple accepting the app even if it just consisted of a few panorama's.