A modern Material 3 Expressive calendar for Android.
About this app
Calendula is a modern, open-source calendar app for Android. It works directly on the system calendar provider, so any source synced to your device — Nextcloud via DAVx5, Google, local, WebCal subscriptions — shows up automatically, and changes you make sync back the same way.
Create, edit and delete events, including recurring events with scoped changes (only this event / this and all following / the whole series) and a simple repeat picker. Calendula also delivers your event reminders as notifications — tap one and you're on the event.
Optionally, show your contacts' birthdays, anniversaries and other special dates in your calendar. You turn this on yourself; contacts are read only on your device, are never uploaded, and are never changed — Calendula only mirrors the dates into local calendars you fully control.
The differentiator is the design: real Material 3 Expressive throughout, with dynamic color, expressive motion, and expressive shapes.
Privacy: zero telemetry, no analytics, no network access — your data never leaves the device.
Licensed under MIT, by Jean-Luc Makiola.
What's New in v2.14.1
Imported from the F-Droid repository index.
- ### Fixed
- - Deleting one occurrence of a repeating event no longer breaks the series.
- Choosing "This event" when deleting an occurrence of a recurring event could
- wipe out every *other* occurrence while leaving the one you deleted behind as
- a stale, still-tappable ghost — and deleting it again brought the series back.
- A single-occurrence delete now removes exactly that occurrence and leaves the
Version history
Jul 15, 2026 · 6 MB · Android API 29–36 · code 21401
Imported from the F-Droid repository index.
- ### Fixed
- - Deleting one occurrence of a repeating event no longer breaks the series.
- Choosing "This event" when deleting an occurrence of a recurring event could
- wipe out every *other* occurrence while leaving the one you deleted behind as
- a stale, still-tappable ghost — and deleting it again brought the series back.
- A single-occurrence delete now removes exactly that occurrence and leaves the
SHA-256 cfbf7ff799cdcd8998091a7719b3edb82d034e2bd9d08bf4c13633c59bcc128b
Jul 10, 2026 · 6 MB · Android API 29–36 · code 21400
Imported from the F-Droid repository index.
- ### Added
- - Restore events from a backup file. The backup section of Settings can now read
- events back **in** from an `.ics` file, not just write one out: pick a file,
- choose which calendar to import into, and Calendula adds the events — skipping
- any that are already there and telling you how many it skipped. Export gained a
- per-calendar selector at the same time, so you can back up just the calendars
SHA-256 b0518f5deb34a5edc9f346a34c9db37b1890e0a4bda4717ceb2daa0afbf651da
Jul 4, 2026 · 6 MB · Android API 29–36 · code 21300
Imported from the F-Droid repository index.
- ### Added
- - Calendula now speaks Spanish and Italian. Both arrived as community
- translations through [Calendula's Weblate](https://weblate.dev.jeanlucmakiola.de/projects/calendula/)
- — a **huge thank you** to
- [kikerw](https://weblate.dev.jeanlucmakiola.de/user/kikerw/) for the Spanish
- translation and to
SHA-256 d2b01e8bb76fad33c8ec4d4874e3b57165d4b42e7491f1c4297caeb238c4ccdb
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be de.jeanlucmakiola.calendula is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.14.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Calendula first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Calendula, and a listing is removed when the evidence for it stops holding up.
Get Calendula
Every source we list for de.jeanlucmakiola.calendula is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
cfbf7ff799cdcd8998091a7719b3edb82d034e2bd9d08bf4c13633c59bcc128b
Signing certificate
5cdaee8eb31cb0df9157c646ae3ec8b3dc43b5bb72624e088c9ddea0c4eb5ec1
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
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