HamyarBook's گام به گام سوم ابتدایی is an Android application designed to provide a step-by-step guide to the third-grade curriculum in Iran, according to the latest updates made inThe app is part of the comprehensive HamyarBook series, which includes similar guides for first-grade, second-grade, and middle school students.

The app comes with seven textbooks covering math, Persian, Quran studies, social studies, writing, and science. The app's premium version includes in-app purchases. The app's support team can be contacted via Telegram and WhatsApp, and the developer's contact information is provided in the app.

The app's features include complete coverage of all the exercises and activities in the third-grade textbooks, as well as separate access to each chapter's exercises. The app also provides access to the previous two school years' content.