الكبائر للذهبي is an Android application developed by So Smart Apps that provides a comprehensive reference to Islamic beliefs and practices. The book is written by Imam Al-Dhahabi, and the app offers a range of features to make the reading experience more customizable and convenient.

The app allows you to change the font size and color, and choose from eight Arabic fonts. You can also select from hundreds of background colors and dozens of themes, or choose from a range of pre-selected images. The app also offers a night reading mode for comfortable reading in low-light conditions. The side menu contains all the chapters for easy navigation, and you can save your favorite chapters and notes.

The app also offers search functionality to find specific words or phrases within the book or chapters, and you can copy and share any chapter or section of the book. Additionally, the app allows you to set a timer for reading and automatically exit the app when the time is up.

Overall, الكبائر للذهبي is a useful Islamic reference app that offers a range of features to enhance the reading experience.