"كتاب المرحلة الملكية" or "The Royal Stage Book" by Awallim is a free educational book available on Android. It is considered one of the best books that discuss the evolution of humans during their growth stages until they reach the royal stage. The book is written in Arabic and is categorized under "Books" in the "Education & Reference" section.

The book takes the reader on a journey through the different stages of human development, including the royal stage, which the author describes as a period of maturity. The word "royal" symbolizes two beautiful meanings: the first is the magnificence and splendor of this stage, and the second is that your life will be your own, a period in which you will enjoy happiness and peace of mind. This stage is a time in which you will be the king of your life, a period rich in experiences and lessons.