The Varsity Tutors AP Calculus AB app is a free Android app designed to help students prepare for the AP Calculus AB test. The app features challenging practice and diagnostic tests that can help push students beyond their comfort zone and closer to a 5 on the exam. The app tests students on functions, graphs, lines, derivatives, integrals, and many other concepts. It assesses students’ knowledge on the properties of functions, applications, and computations of derivatives, and applications of integrals.

The app provides a library of pre-made flashcards that students can use to learn at their own pace. The app also allows students to create their own flashcards, adding pictures, audio, and text to fit their learning needs. Using the app to practice solving various equations can ensure that students are also up to speed for the exam’s free response section. The app's "Tests Taken" feature allows students to manage and analyze their progress on full-length practice and diagnostic exams. It also allows them to easily share their results with family, friends, and their tutor.