I just returned to iOS from a Nexus 4...and my return left me with one nagging question. Like android, is there an option in iOS that allows the user to clear cached data that some apps are storing? Particularly Instagram and Facebook, as these two seem to be stockpiling ridiculous amounts of data. Is it possible to clear caches on apps such as these without having to delete and reinstall them? I know some have the functionality baked into their code, such as Flipboard, but I'm wondering of its possible to do it on a system side level, maybe even from iTunes or something?