گام به گام پایه هشتم با جواب is a free educational app for Android developed by Arvel Apps. It falls under the category of Education & Reference and offers a complete guide to all the subjects of the eighth grade. The app is designed to be used offline, without an internet connection, and is available in American English.

The app offers lessons in subjects such as Mathematics, Science, Arabic, English, Persian, Social Studies, and more. It also includes features such as the ability to switch between continuous and page-by-page reading modes, save the last page read, zoom in on pages, activate the night mode, and adjust the background color. The app is compatible with all Android devices running version 4.0 or higher, and its user interface is simple and easy to navigate.