K-App is an android application that applies the Differentiated Instruction method. contains a calculus 1 learning module on absolute value equation material, which was compiled by a lecturer in the Calculus 1 course in the Informatics Engineering Study Program, Darussalam Gontor University, Al-Ustadzah Triana Harmini, M.Pd.

Differentiated Instruction method is a method that maximizes the user's learning ability, adapting learning to the user's ability. so that users are able to get the same learning outcomes, but with different ways of learning. The differentiator used in this application is the basic ability of the user, so that later the user will be classified according to their respective basic abilities.