The application “Tajvid” is based on the textbook of the author Ildar Alyautdinov, currently is the imam of the Moscow Cathedral Mosque. Philologist, Master of Al-Azhar University (Egypt).

The textbook is recommended by the Central Religious Organization "The Spiritual Administration of Muslims of the City of Moscow" as a textbook on the subject "Tajvid - reading the Koran" for elementary and secondary special Islamic institutions.
This is a symbiosis of the best traditions of teaching the rules of reading the Quran (tadzhvid), instilled in the Cairo alma mater of Islamic theology, and the successful practice of teaching Koranic disciplines in Russia.