When it comes to customization, iOS is one of the least compliant mobile ecosystems. In fact, the only way to apply any kind of theme or aesthetic alteration is usually by means of a jailbreak, so if you can't, or simply don't want to step into the world of Cydia and its many thousands of tweaks and themes, you're pretty much stuck with what Apple has given you. Well, that needn't necessarily be the case with a new app called Iconical, which lets you alter the appearance of your home screen icons without the need to apply any sort of jailbreak.