Run All Apps in Fullscreen Mode With Maximization Tweak
Maximization is a new tweak by rud0lf77 that removes the status bar from apps running on your iOS device.
Maximization allows you to run all your Apps in Fullscreen-Mode (by removing the Statusbar). It also adds the Time and Battery Percentage to the Notification Center Grabber. You can disable Maximization for certain Apps in the Settings.
You can get Maximization from the ModMyi Cydia Repository.