Pre-Calculus is an essential course that covers a wide range of functions and graphs that students should be familiar with from their Algebra 1 and Algebra II courses. Varsity Tutors LLC has developed a free app for Android-powered smartphones and tablets named Precalculus: Practice Prep, which is a comprehensive study app that provides students with the tools they need to master Pre-Calculus.

The app includes diagnostic tests, interactive flashcards, and a syllabus that has Pre-Calculus materials broken down into a detailed order. Students can start from the top or jump directly to any category they want to study. It covers a wide range of topics, including solving and graphing of functions, domain, range, maxima and minima, exponential and logarithmic functions, the use of polynomials, sequences, and series, and limits such as x approaching infinity and one-sided limits. The app also features a question of the day feature to help students retain knowledge.