Why is their no clear cache for apps on the iPhone? It annoys me so much. Sometimes there will be so much documents and data that the app will start having issues. A good example of this is twitter. It will start becoming inoperable and slow. But because ios doesn't have a clear cache option I have to uninstall and reinstall the app every time it starts doing this. To say it's annoying is an understatement. Especially for people like me who already have a very limited amount of data