The New iPad comes with Retina Display and the apps that are bumped up for this higher resolution are also upto five times heavier than they were before. According to The Verge, Apple's iLife and iWork for the new iPad will be five times larger, than their predecessors. A Vietnamese publication, Tinhte got its hands on the New iPad and has studied the way it handles applications. They said, “The applications developed by Apple have been upgraded to support the Retina Display. For example Keynote was previously only 115MB but its latest version is 327MB. Numbers is up from 109MB to 283MB, Pages moves from 95MB to 269MB, and iMovie from 70MB to 404MB.“
Retina Display will make apps heavier
Although these apps come with some new features, they are not enough the explain such a large bump up in app size. Furthermore, these sizes are only download sizes, and do not reflect how much the app will weigh, once it's actually been downloaded. iPhoto for iOS will now be able to handle 19 megapixel photos and the iPad has a 5 megapixel camera. It seems an iPad with 16GB of space will be a tight fit, forget about even an 8GB iPad (if one will come). Other apps, too will start becoming heavier once developers add the bump ups that will make use of the iPad's higher resolution.
What this will also mean is owners of the original iPad and the iPad 2 have heavier apps to contend with. Apple does not seperate apps by iPad, yet (only by iOS) and therefore, the same apps will be available across all three iPads (keeping the OS constant). Furthermore, these iPad owners will basically be storing the unused graphics made for the Retina Display of the New iPad on their older devices.