Sunni Masterpiece App for Learning Arabic Grammar is an Android application developed by EL ISSAOUI. It is a free education and reference app that teaches Arabic grammar using the explanation provided by the ajārūmīya. This small-sized app is easy to use for beginners as well as advanced learners.

The app includes all the chapters of the ajārūmīya and has an easy-to-use navigation menu to explore them. Users can save the last page they have read to continue reading from that point. They can also use swipe gestures to move to the next or previous pages. The app also features a drop-down list with two buttons to move forward or backward in small increments.

The Sunni Masterpiece app also has a sharing option that allows users to share the app with their friends on social media platforms like Facebook and WhatsApp. Users can also rate the app and provide feedback to the developer to improve it further. Overall, it is a useful app for anyone who wants to learn Arabic grammar.