Tử vi 2021 is a free lifestyle app developed by S3D Team for Android users. It offers a range of features such as daily horoscopes, fortune telling, and the lunisolar calendar, making it a convenient and accessible tool for those interested in astrology and divination. The app includes a variety of functions such as reading tarot cards, deciphering dreams, and divination through mole reading. Additionally, users can view their horoscope details based on the 12 signs of the zodiac and 12 animal zodiacs. Other features include weather updates, good quotes, and feng shui sim. The app is user-friendly and provides accurate and relevant information for those interested in exploring their spirituality. However, it is important to note that the app should not be used as a substitute for professional advice. Overall, Tử vi 2021 is an excellent app for those seeking to learn more about astrology and divination.