Lunar Calendar - Universal Calendar is an Android application by AppMaven that helps you look up the lunar and solar calendar according to Vietnam's timezone and remember important family dates. Instead of searching for a calendar, changing dates, and looking up information in many places, you can do all of this right within a single app.

• View the monthly calendar and details for each day: lunar calendar, solar calendar, heavenly stems and earthly branches, solar terms, and auspicious hours.
• Convert lunar - solar dates, view leap months, calculate the interval between two dates, and look up Vietnamese holidays.
• Refer to good days, bad days, and choose dates for events such as weddings, store openings, or moving in.
• Save anniversary, birthday, or event dates according to the lunar/solar calendar; set calendar reminders and add a calendar widget to the home screen.
• View the Tet handbook, countdown, and look up age and year information according to folk beliefs.

The application is suitable for people who want to keep track of the Vietnamese calendar and not miss out on anniversaries, holidays, or family occasions. The product focuses on combining the lunar calendar calculated according to Vietnam's timezone, traditional dates, and task reminder tools all in one place. The information about good and bad dates, ages, and fortunes is for reference only according to folk beliefs.

Install on Google Play for Android phones or tablets. The calendar viewing and lookup functions work without logging in, even when there is no network. The app contains ads and has a one-time purchase option to remove ads; calendar reminder notifications need to be allowed on the device.