Fortress of the Muslim Full Application by metraq is an Android-based app available for free on the Google Play Store. The app is a comprehensive collection of all the dua's and adhkaar (supplications and remembrances) from the famous book "Fortress of the Muslim" (Hisn Al-Muslim). This app is a must-have for all Muslims who want to keep their supplications and remembrances organized in one place.

The Fortress of the Muslim Full Application is user-friendly, has an easy-to-use interface, and is designed to help Muslims stay connected to their faith. The app contains a wide variety of supplications and remembrances for daily use, including morning and evening adhkaar, dua's for different occasions, and more. The app also allows users to mark their favorite dua's and adhkaar for quick access.

Overall, the Fortress of the Muslim Full Application is a great tool for Muslims to keep their supplications and remembrances organized in one place, making it easy for them to stay connected to their faith. The app is ideal for all ages and is highly recommended for anyone who wants to have access to a comprehensive collection of dua's and adhkaar on their Android device.