Since iOS 7, your iPhone automatically updates all your apps, which is a wonderful thing … until it's not. Not only does this feature drop the battery faster when it is activated, it can also make changes to the features, settings and user interfaces of the apps you already know and love. That's why you can easily disable the feature and stop apps from automatically updating.
Overall, automatic app updates are a good thing. But manually updating your apps is not a crazy thing to want either. So, to disable automatic app updates, open the Settings app, go to "iTunes & App Store" and turn off "App Updates" under Automatic Downloads . It is.
Now your applications don't automatically download in the background. Instead, a notification badge will appear in the App Store app every time an update is released. You then have to go into the App Store and choose to either install all the updates at once or one at a time.