I'm the iOS developer on the Khan app, and not having to maintain a codebase for multiple platforms is one of the main reasons why we went with jQuery Mobile.

I'm the iOS developer on the Khan app, and not having to maintain a codebase for multiple platforms is one of the main reasons why we went with jQuery Mobile. Khan Academy has a lot of custom logic (badges being awarded, points being accrued, and so on) and duplicating that across platforms would be a nightmare.