Apple keeps improving iOS all the time. But the software does have some limitations that can be better addressed with jailbreak tweaks and solutions. Take the process of capturing screenshots. It is not that hard to do on your iPhone or iPad. But ScreenShotPlus makes the process even easier. You can use ScreenShotPlus to capture screenshots of selected screen areas on iOS.
ScreenShotPlus shows dimensions for your captures and gives you a lot of flexibility when you are taking screenshots of a specific area on your screen. This solution works just fine on your iPhone or iPad.
3DBoard is another interesting tweak for iOS. In case you missed it, iOS 7 ships with a cool 3D display effect that gives users the impressions that icons are floating when they move their device. 3DBoard brings that effect to devices running older iOS devices. It may not be as polished as what you get on iOS 7 but still fun to play around with.