In iOS 7, you can choose to have all of your App Store applications update automatically for you in the background so that you'll never have to worry about having an outdated version of an App Store application when you go to use it.
To add more fine-grained control over how and when App Store applications are updated in the background, check out a new jailbreak tweak called App Update Manager
by iOS developer noppers.
This tweak gives the user more options for defining when or when it isn't it's okay for an application to go ahead and update in the background when an update is available in the App Store. After you install the tweak, you'll find a new preferences pane in the Settings application where you'll find all the settings you can adjust to your liking:
As is customary with most tweaks, you'll be able to enable or disable the tweak on demand via the available kill-switch. You'll also find yourself with the ability to have applications only update in the background when you're connected to a power source, which may come in handy if you're worried about a large download draining your battery.
You'll also be able to define a battery percentage where the device should not attempt to download an application update, which could come in handy for preventing your device from dying when you're at a low battery percentage. The tweak gives you the ability to define any battery percentage (default), 5%, or 10% increments from there. If you set this setting to say, 30%, then your device will not attempt to automatically download App Store updates if your battery level is at 30% or lower.
You'll also be able to individually control what applications are allowed to update in the background. You'll find a list of all of your application icons, and turning them on means that they are allowed to update in the background, while turning them off means that they are not allowed to update in the background.
For this tweak to work correctly, you will need to enable Apple's Automatic Update Downloads option under Settings>iTunes & App Store>Automatic Downloads>Updates.
Since many people are worried that automatic App Store updates might break certain applications on them, the control over which applications are allowed to update automatically is a nice feature to have. The ability to control when applications are able to update is also a nice way to control application updates. We would say that this tweak is a great addition to any iOS 7 device. If you're interested in giving it a try, it's available in Cydia's ModMyi repository for 99¢.
App Update Manager