Over two years ago Samsung published in its Galaxy App Store app named Good Lock. App was used to customize look of user interface, and whole project received good reviews. Later Samsung decided to focus on developing Samsung Experience project, but finally after months of waiting firm will release big update of Good Lock.
Look of upgraded version of Good Lock is completely different than in previous versions. From the most interesting options we should mention different clock positions on lock screen, customization of "Recent apps" screen by using options like Linear or Cube and quick settings tuner which allows for changing of quick settings panel's color. At this moment Good Lock may be installed only in unofficial way, but in the nearest future Samsung will release official upgrade of this app for all devices.