Pintar Matematika SD Kelas 4 is a free educational quiz app developed by Mufimob for Android devices. It is designed to help kids in grade 4 learn math while having fun. The app covers 8 topics based on the elementary school curriculum, including basic arithmetic operations, factors and multiples, measurements, basic geometry, integers, fractions, Roman numerals, and 3D shapes.

The app features 20 multiple-choice questions for each topic, and a time challenge mode that motivates kids to answer questions quickly. It also has a score tracker that keeps track of the user's progress and allows them to share their scores with friends. Overall, Pintar Matematika SD Kelas 4 is an engaging and interactive way for kids to learn math concepts and practice their problem-solving skills.