updated 11:30 am EST, Mon December 27, 2010
Requires jailbroken tablet
A new unofficial hack, RetinaPad, allows iPhone apps to be run in higher resolution on the iPad. Although the iPad does include a zoom option for iPad apps, this often results in ugly graphics. RetinaPad displays apps at a resolution closer to the iPad's native 1024x768, although this also requires that they have Retina Display compatibility.
To run the hack, users must have a jailbroken iPad with access to Cydia. RetinaPad costs $3 at the Cydia Store. The code may become increasingly irrelevant as more apps upgrade to become universal titles, natively compatible any iOS handheld. Apple could also potentially upgrade iOS to detect Retina-resolution apps, and automatically apply a larger size.