Portrait Lock - this is a new tweak for iOS-jailbroken devices, allowing to set a custom unit to automatically turn the screen in different applications. Download and install the utility program can be done through Cydia.
Portrait Lock tweak from Cydia appeared a few days ago. The gist of it is very simple - to prohibit automatic change screen orientation (horizontal or vertical) in iOS. To do this, the user is prompted to select the dates of games and applications from the list of installed on iDevices. List of software generated in the relevant section of settings.
For example, you want to watch YouTube videos in a horizontal form, and at the same time to read the messages in the vertical iMessage? Make it easy without making much fuss - just tick the 'Settings »Portrait Lock opposite the respective applications.
To install the software you want to jailbreak and an Internet connection. Tweak is available for downloading on devices with iOS 7 and later versions of the operating system on board.