HolyDays Ελληνικό Εορτολόγιο is a free lifestyle app that provides a comprehensive Greek calendar with all the important holidays, name days, fasts, national and international celebrations. Developed by Ioannis Panteleakis, this app is a must-have for anyone who wants to keep track of important dates and events.

The app features a list of saints, the names of those who celebrate, and a notification system to ensure you never miss an important date. With a simple click on any day of the year, you can access the corresponding Wikipedia page to learn more about the event. Additionally, a long press on any day of the year will display a complete list of the saints celebrating on that day and their corresponding names.

Overall, HolyDays Ελληνικό Εορτολόγιο is a well-designed, user-friendly app that provides all the information you need about Greek holidays and celebrations. Any feedback to improve the app is always welcome.