Occasionally you might get an app that just refuses to work correctly on your iPhone or iPad. Under iOS versions 5 and 6 you could double-click the home button and just press the app until is would wiggle. You could then push the X and close the offending app. This does not work in iOS 7. Here how it is done is iOS 7…
- double-click the home button to bring up the app changer
- grab the offending app and push it off the top of the screen
- the app process is now terminated
At this point you can attempt to reopen the app or if need so uninstall then re-install.