万年历 - 含择吉老黄历及日历功能 is a comprehensive Chinese calendar app for iPhone that provides accurate calendar information. It displays multiple calendar systems including the Gregorian calendar, lunar calendar, and the traditional Chinese calendar. The app offers a wide range of features, including daily and hourly auspicious and inauspicious timings, holidays, and more.

One of the standout features of this app is its extensive time span. It supports queries for any day between 1900 andIt also displays popular national and international holidays, as well as the traditional Chinese solar terms. The app allows users to easily switch between the Gregorian and lunar calendars for convenient date conversion.

The app also includes a concise and user-friendly auspicious selection feature. It provides accurate results for hundreds of items, allowing users to make informed decisions. Additionally, users can save their auspicious results for future reference. The interface of the app is clean and intuitive, with support for various gestures. It focuses on the core functionalities of a calendar app, making it suitable for both general users and professionals in the field of Chinese astrology and date selection.