A free app for Android, by Nithra.
Nithra Tamil Calendar is the best Tamil Calendar that provides you with all the information you can use to have a good understanding of the Tamil calendar.
The app is a complete information source for all the latest and the most important events that are taking place in Tamil Nadu, including the specific details about the festivals, the days that are considered to be auspicious, the days when people are supposed to fast and other events that are taking place.
There are various other functions that you can use with this application. You can set the custom view for each of the months. It is also very easy to search for the event that you are interested in. You can even share the event on your social media page and the event will appear in your feed.