What’s new
Fixed
• The split month view fits more events: a selected day shows its date once, in the filter chip, and the day headers take less room.
• Event dots in the split grid no longer drop down on days with a "+N".
Quick answer
A Material 3 Expressive calendar for Android with no network access.
Calendula is an open-source calendar app for Android. It works directly on the system calendar provider, so anything synced to your device (Nextcloud via DAVx5, Google, local calendars, WebCal subscriptions) shows up in Calendula, and changes you make sync back the same way.
It has month, week, day and agenda views. You can create, edit and delete events, including recurring ones, and set repeats from presets or your own rules. When you change a recurring event, you choose whether the change applies to that one event, to it and all following ones, or to the whole series.
Calendula shows your event reminders as notifications. Tap one to open the event.
If you turn it on, Calendula also shows your contacts' birthdays, anniversaries and other dates. Contacts are read on your device and are never uploaded or changed. Calendula copies the dates into local calendars that you control.
The design is Material 3 Expressive throughout, with dynamic color and expressive motion and shapes.
Calendula has no telemetry, no analytics and no network access. Your data never leaves the device.
Screenshots
How to install
- Download the APK from the button at the top of this page.
- Allow “Install unknown apps” for your browser or file manager only, not for every app.
- Open the downloaded file and confirm the installation.
- If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
- Every file is checked against its published SHA-256 before it is listed.
- Files are scanned for malware on every update.
- The permissions each app requests are listed on its own page.
- Read the full safety policy for how we test, flag, and delist files.
Frequently asked questions
What is Calendula: Calendar?
A Material 3 Expressive calendar for Android with no network access.
Who develops Calendula: Calendar?
Calendula: Calendar is developed by Jean-Luc Makiola.
Which Android version does Calendula: Calendar require?
Calendula: Calendar requires Android API 29 or later.
What is the current version of Calendula: Calendar?
The synchronized F-Droid version is 2.23.0.
Which license does Calendula: Calendar use?
The signed F-Droid metadata lists MIT.
Where is the source code for Calendula: Calendar?
https://codeberg.org/jlmakiola/calendula
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