Etar - OpenSource Calendar

Etar - OpenSource Calendar

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

Calendar & Agenda

Screenshots

Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar Screenshot of Etar - OpenSource Calendar

Description

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.

Bugs and feedback: https://github.com/Etar-Group/Etar-Calendar/issues
Source code: https://github.com/Etar-Group/Etar-Calendar

What’s new (1.0.56)

- Use SAF to avoid external storage permissions
- Prevent Etar from overriding external calendar sync settings
- Add missing channel_ID
- Bugfixes

Versions

Version Date Size Requires Android Download
1.0.56 current
a7f9bc86bb011156…
2026-06-09 8.4 MB API 23
1.0.55
507ff8a1a02cfcdb…
2026-04-21 8.4 MB API 23
1.0.54
c2b3a3485199aca9…
2026-04-19 8.4 MB API 23

Permissions

What the app asks the system for. Android only grants sensitive access after you confirm it.

  • Accounts on the deviceRead the list of configured accounts.
  • VibrationControl the vibration alert.
  • Read contactsAccess the address book.
  • Read calendarRead appointments.
  • Change calendarCreate and change appointments.
  • Prevent sleepingKeep the device from going to sleep.
  • Sync settingsRead synchronisation settings.
  • Foreground serviceKeep running in the background, visible in the status bar.
Show 7 more permissions
  • FOREGROUND_SERVICE_SYSTEM_EXEMPTED
  • Exact alarmsTrigger actions at a precise time.
  • REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
  • NotificationsShow notifications.
  • Network stateCheck whether and how the device is connected.
  • Run at startupStart automatically after the device is switched on.
  • etar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Comments