With Maximization you can run all applications in full screen, that is, without the status bar appearing (as in the image above, which despite being in Settings you cannot see the bar), this already happens with some applications, including most games.
You can make all applications work this way, full screen, or that only be the ones you choose, selecting it from the settings of your device. The most curious thing about the application is that you can continue to see the time and battery percentagea, since it will show them to you in the tab that appears at the top of the screen when you slide to bring up the notification center.
You can download it free on Cydia, you will find it in the BigBoss repo. You need to have done the jailbreak on your device.
More information – HomeCourts: add a quick menu to call, send SMS, email, activate Bluetooth, etc. (Cydia)
Source - iDB