شرح الأصول الثلاثة لابن عثيمين is a small-sized but highly beneficial educational app developed by EL ISSAOUI. The app provides a complete guide to the three fundamental principles of Islamic belief, namely Tawheed, knowledge of Allah, and knowledge of His prophets. The app is designed to provide easy navigation for users, with separate sections for each principle. The user-friendly interface allows users to save the last page read, making it easier to continue reading from where they left off.

The app does not require any prior experience or technical knowledge to use. Upon opening the app, users are presented with a menu of reading and sharing options. The app allows users to scroll up or down to browse through pages or use the drop-down menu to select a specific section. The app also features a share button that allows users to share the app with friends and family on social media platforms like WhatsApp and Facebook. Additionally, users can rate the app to support the developer and encourage the creation of more educational apps.