The old QuizDuel was running on an outdated technical setup and in order to continue to update the QuizDuel game experience and offer new game features, we were required to change platforms, this means it is a new app with updated features. Along with that, we have switched to a subscription model that allows us to maintain the app so that we can continue to provide you, our players, with the best gaming experience possible. There are also more ad-free game options, and we are constantly working on additional options to give you a variety of choices.