Etar - OpenSource Calendar | F-Droid - Free and Open Source Android App Repository

Etar - OpenSource Calendar

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

New in version 1.0.51

- Improve guest selection style and readability
- Fix Event date picker for end date always preselects start
- Remove PrimaryColor preference
- Bugfixes

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

License: GNU General Public License v3.0 only
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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Version 1.0.51 (51) suggested Added on Aug 07, 2025

This version requires Android 6.0 or newer.

It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
- run foreground service
  
  Allows the app to make use of foreground services.
- run foreground service with the type "systemExempted"
  
  Allows the app to make use of foreground services with the type "systemExempted"
- find accounts on the device
  
  Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
- show notifications
  
  Allows the app to show notifications
- Read calendar events and details
  
  This app can read all calendar events stored on your phone and share or save your calendar data.
- read your contacts
  
  Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
- read the contents of your shared storage
  
  Allows the app to read the contents of your shared storage.
- read sync settings
  
  Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- Schedule precisely timed actions
  
  This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
- control vibration
  
  Allows the app to control the vibrator.
- prevent phone from sleeping
  
  Allows the app to prevent the phone from going to sleep.
- add or modify calendar events and send email to guests without owners' knowledge
  
  This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
- modify or delete the contents of your shared storage
  
  Allows the app to write the contents of your shared storage.
- ws.xsoh.etar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 7.3 MiB PGP Signature | Build Log
Version 1.0.50 (50) - Added on Jul 28, 2025

This version requires Android 6.0 or newer.

It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
- run foreground service
  
  Allows the app to make use of foreground services.
- run foreground service with the type "systemExempted"
  
  Allows the app to make use of foreground services with the type "systemExempted"
- find accounts on the device
  
  Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
- show notifications
  
  Allows the app to show notifications
- Read calendar events and details
  
  This app can read all calendar events stored on your phone and share or save your calendar data.
- read your contacts
  
  Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
- read the contents of your shared storage
  
  Allows the app to read the contents of your shared storage.
- read sync settings
  
  Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- Schedule precisely timed actions
  
  This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
- control vibration
  
  Allows the app to control the vibrator.
- prevent phone from sleeping
  
  Allows the app to prevent the phone from going to sleep.
- add or modify calendar events and send email to guests without owners' knowledge
  
  This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
- modify or delete the contents of your shared storage
  
  Allows the app to write the contents of your shared storage.
- ws.xsoh.etar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 7.3 MiB PGP Signature | Build Log
Version 1.0.49 (49) - Added on Jul 17, 2025

This version requires Android 6.0 or newer.

It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
- run foreground service
  
  Allows the app to make use of foreground services.
- run foreground service with the type "systemExempted"
  
  Allows the app to make use of foreground services with the type "systemExempted"
- find accounts on the device
  
  Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
- show notifications
  
  Allows the app to show notifications
- Read calendar events and details
  
  This app can read all calendar events stored on your phone and share or save your calendar data.
- read your contacts
  
  Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
- read the contents of your shared storage
  
  Allows the app to read the contents of your shared storage.
- read sync settings
  
  Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- Schedule precisely timed actions
  
  This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
- control vibration
  
  Allows the app to control the vibrator.
- prevent phone from sleeping
  
  Allows the app to prevent the phone from going to sleep.
- add or modify calendar events and send email to guests without owners' knowledge
  
  This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
- modify or delete the contents of your shared storage
  
  Allows the app to write the contents of your shared storage.
- ws.xsoh.etar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK 7.3 MiB PGP Signature | Build Log

Versions

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