Vaishnava Calendar is a free Android application designed to provide a comprehensive guide to Hindu festivals and fasts. Developed by Sankarsana das, this application is a must-have for anyone who wants to keep track of important Vaishnava events and celebrations.

The application displays a list of all Vaishnava celebrations and Ekadasis, along with notices of fasting days in advance. It also notifies users of upcoming events and festivals in the notification area. The app displays the output time of the fast, taking into account the user's location. Moreover, it provides a time display of Brahma muhurta, as well as the sunrise, sunset, and moon timings.

One of the unique features of this application is its ability to export events to the Google calendar. The application also provides a description of all the holidays and Ekadasis. What's more, there's no need for an internet connection for this application to work.

Overall, Vaishnava Calendar is an excellent reference and educational tool for anyone interested in Hindu festivals and fasts. Its user-friendly interface and comprehensive features make it a valuable addition to any Android device.