Calendario con Onomastici is a free calendar app developed by TechPlanet for Android devices. It is a comprehensive calendar app that allows users to add various events and categories such as birthdays, name days, deadlines, events, commitments, meetings, appointments, and more. Users can also add custom categories to the calendar.

The app also includes all holidays such as Christmas and Easter, making it easy to keep track of important dates. Users can set reminders for each memo and receive notifications at a specific time. With its user-friendly interface and easy navigation, Calendario con Onomastici is a great tool for anyone looking to manage their schedule efficiently.