The application of the Wasitiyya doctrine by Sheikh al-Islam Abu al-Abbas Ahmad ibn Abd al-Halim Ibn Taymiyyah al-Harrani presents one of the most famous texts in explaining the doctrine of the Sunnis and the community. This treatise is considered one of the basic works in which Sheikh Ibn Taymiyyah explains the foundations of faith and monotheism in a clear and focused manner, and it is an important reference for scholars and learners in the field of the Islamic faith. The application features useful features that facilitate the user's reading experience, including the zoom in and zoom out feature, which allows the text size to be adjusted to suit the reader's need, and the dark and light mode feature, which provides the ability to change the lighting mode to suit different reading conditions, which makes the application comfortable and suitable for all times. This application is an ideal tool for those wishing to understand the Sunni doctrine in an organized and practical manner.