Fath al-Majid by Sheikh Abdul Rahman bin Hassan is one of the most famous commentaries on the Book of Tawhid by Imam Muhammad bin Abdul Wahhab, who is the grandson of the sheikh, may God have mercy on them both.

Fath al-Majid is an arrangement, refinement, and completion of the book Taysir al-Aziz al-Hamid, which was explained by Sheikh Suleiman bin Abdullah, may God have mercy on him.
Where the author of the book Fath al-Majid said:
When I read his explanation, I saw that he was verbose in places, and in some of them there was repetition, some of which dispensed with all of it, and he did not complete it. So I started refining it, approximating it, and perfecting it, and perhaps I included some good sayings in it to complete the benefit, and I called it Fath al-Majid bi Sharh Kitab al-Tawhid.

The application contains:
- Audio reading of the book
- The book is readable

The application works without the Internet