Matematika 4-sinf is an electronic textbook app developed by Globalapps Publishing Company for Android devices. It is a free app available for anyone who wants to improve their math skills and knowledge. The app is categorized under Education & Reference, specifically under the Books subcategory.

This electronic textbook provides students with the convenience of having their math textbook on their smartphones. The app is user-friendly and easy to use. The textbook is organized by chapter and covers topics such as algebra, geometry, and statistics. The app also includes sample problems and exercises to help students practice and reinforce what they have learned.