The کتاب گام به گام سوم دبستان app is a free educational tool developed by Arvel Apps for Android users. It is a comprehensive app that covers all subjects for third-grade students, including Mathematics, Science, Persian Reading, Persian Writing (Composition), Gifts from the Sky, Quran, and Social Studies. The app provides a new editing feature and updated answers for theacademic year, making it an excellent resource for students who want to improve their academic performance.

One of the standout features of the app is the ability to enable a flipbook or scroll mode, which allows for a more personalized reading experience. The app also allows for automatic saving of the last page read, zooming in and out of pages, and a night mode option. The user interface is straightforward, making it easy for students to navigate and access the information they need. The app is compatible with all Android devices running version 4 or higher and is available for free download.