Van Nien 2020 Calendar is a free lifestyle application developed by DmobiSoft for Android 9.0 devices. The app is designed to provide users with a traditional Vietnamese lunar calendar to look up dates and times. The app is simple to use and consists of two parts, a day calendar, and a month calendar.

The app displays the exact date details in place of a paper calendar, making it easy to keep track of important dates. The app is easy to navigate with a simple operation, allowing users to swipe left or right to move to the next day or month. The app also supports hours and days, and shows holidays throughout the year. Additionally, the app collects some goods maxim of Vietnam and many countries in the world.