The Fitter Theory App is a great way to learn about fitter theory in a fun and interactive way. The app features a variety of quizzes and questions on a variety of fitter theory topics. The questions are multiple-choice and cover a wide range of difficulty levels, so there is something for everyone. The app also features an interactive quiz mode that allows you to answer questions and track your progress. You can also view your results and see how you did on each quiz. The Fitter Theory App is