Widgets On IOS
Apple has not, as of 2011, announced support for the installation of Dashboard widgets on the iOS. Even though, in June 2008, an unannounced update of Dashcode that was packaged with the iPhone SDK allowed for the creation of iPhone-oriented web widgets, it is unknown if this most recent version of Dashcode would support the creation of AJAX-driven mobile widgets that could be installed natively on the iOS.
It has been demonstrated by Erica Sadun that installing Dashboard widgets on a jailbroken iOS is possible in theory, but most desktop-oriented widgets 1) are not oriented to usage or interaction on the iOS's multi-touchscreen-oriented interface; and 2) rely on DashboardClient's widget JavaScript object, which is not part of the iOS.
Read more about this topic: Dashboard (Mac OS)