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Etar - OpenSource Calendar

Name: Etar - OpenSource Calendar
Author: Etar-Group

Etar-Group

Etar is a material designed open source calendar, for everyone!

Calendar
FOSS
Free
No ads
No tracking

Android only

Get Etar - OpenSource Calendar

Get it on F-Droid Get it on Zapstore

What are these stores? F-Droid, Zapstore

Features: - Month view. - Week, day and agenda view. - Uses Android calendar storage to show all synchronized calendars. - Material Design. - Dark and light theme. - Support offline calendar. - Agenda widget. - Support sharing calendars via ICS and the ability to import/export from SD card. - Multilingual UI.

Developer: Etar-Group
Source code: github.com/Etar-Group/Etar-Calendar
Added to AppCosmos: 9 October 2026
License: GPL-3.0-only