Lá Số Quỷ Cốc is a free Android app developed by YAN TV JSC that falls under the Business & Productivity category. This app is based on the Chinese historical figure, Quỷ Cốc Tử, who is considered the founder of many divination techniques, including numerology, feng shui, and astrology. He had many students, including the famous Tôn Tẫn, Bàng Quyên, Trương Nghi, and Tô Tần.

Lá Số Quỷ Cốc, also known as Quỷ Cốc Tiền Định Số, is a book of destiny, which contains the divination techniques of Quỷ Cốc Tử. The app provides predictions about a person's future in areas such as career, relationships, and family. The app is easy to use and provides accurate and reliable predictions based on the user's birth date and time. The app has a clean and simple interface and is a must-try for anyone interested in Chinese divination techniques.