ShowCase is a simple tweak that will let you see if you have CAPS enabled on your keyboard. Sometimes your hand covers the "shift" key on your screen and you can really see if you have caps on or not. With this tweak, you can change the way your keyboard acts by switching all of the "key" images to lowercase(or uppercase) when you tap shift. Really simple and easy to install, works great, best of all its free! Check out ShowCase in Cydia!