There are many apps out there with similar features: Quizizz, Kahoot, Quizlet Live, and a newer one GimKit. All of these are ways to use technology devices to deliver quiz type questions to students to assess their knowledge of the particular subject matter. They all look to deliver the questions in a game like manner to increase student engagement as they answer questions in an effort to increase their point totals. Teachers can search out already created content and quizzes in each or create their own specific quiz questions to be used.
These tools can turn content review into a gameshow like experience. Below are links to each with a little more about them individually.