If you want a clean, reliable, and privacy-respecting calendar app, Etar Calendar is one of the best open-source options available. It provides a beautiful Material Design interface, smooth performance, and all essential scheduling tools — without ads, trackers, or unnecessary permissions.
Built on the AOSP Calendar base and enhanced by the
open-source community, Etar offers intuitive event management, multiple view
modes, reminders, color coding, and seamless sync with CalDAV, Google Calendar,
Nextcloud, and other services. Whether you’re planning your week, organizing
tasks, or managing work schedules, Etar gives you a lightweight and dependable
experience.
Perfect for users who want a minimal, distraction-free
calendar app that “just works.”
• Clean, Material Design user interface
• Day, Week, Month & Agenda views
• Create, edit & delete events effortlessly
• CalDAV sync compatible with Google, Nextcloud, DAVx⁵ & more
• Customizable colors for calendars and events
• Multiple reminders & all-day event support
• Dark mode for comfortable night viewing
• Search tool for finding events instantly
• Lightweight, open-source & 100% ad-free
• Works offline and syncs when connected
Etar Calendar does not track your activity or collect
personal data.
Your events remain private and under your control — synced only with the
services you choose.
Because it’s open-source, everything about its functionality
is transparent and trustworthy.









