Once you install the tweak, all it takes is another respring, and all of your existing App Store Apps that lack retina compatible icons will automatically be converted.
But that’s not a big deal, because even with the subtle changes that sometimes occur, the icon is always much more attractive than it was before, due to the added pixel density.
What a perfect solution for those with lots of apps from lazy developers who have yet to update their app icons. The developers of the tweak say it works with 99.9% of all App Store Apps, and although there’s no way for us to truly test this, it fixed all of my low-resolution icons with no issue.
It’s easy to recommend RetinaAppIcons, because at just $0.99 cents on Cydia, it will make your iPhone’s home screen more aesthetically pleasing, and requires minimum effort on your part.