Fossify Calendar
Open-source Android calendar with no ads, tracking or account
What is Fossify Calendar?
Fossify Calendar is a free, open-source calendar app for Android from the Fossify project, which publishes a set of everyday Android apps without ads or tracking. It keeps events, reminders and recurring schedules on the device, shows them in day, week, month, year and event-list views, and adds home screen widgets. The app does not request Android's Internet permission; calendars sync only through accounts or calendar providers already configured on the phone.
Fossify Calendar is free to use. See every plan
Good for
- Android users who want a calendar without ads, tracking or sign-up
- People who prefer open-source apps installed from F-Droid
- Keeping a private, local calendar that never leaves the phone
Worth knowing
- Android only; the Fossify project lists Android as its sole platform.
- The app has no sync service or cloud account of its own. Syncing depends on accounts or calendar providers configured on the device.
- Development is funded by donations, and help comes through a public issue tracker and community channels.
- Google Play and F-Droid publish releases on their own schedules, so versions can differ between stores.
Key features
- Five calendar views
- Day, week, month, year and event-list views, with event filters to narrow what is shown and controls for color, theme and display.
- Recurring events and reminders
- Events take times, durations, reminders and advanced repetition rules. Reminder sounds, looping audio and vibration can be customized.
- Sync through device accounts
- Calendar data can sync through accounts or calendar providers set up on the device, such as Google Calendar, Outlook, Nextcloud or Exchange. Fossify runs no sync service of its own.
- Import and export
- Calendars can be imported from and exported to files, which keeps the data portable and gives a way to back it up or move it to another app.
- Holidays, birthdays and anniversaries
- Holidays can be imported, and birthdays and anniversaries can be drawn from the phone's contacts if contacts access is granted.
- No Internet permission
- The app does not request Android's Internet permission, contains no advertising and sends no app data or usage records to Fossify.
Fossify Calendar pricing
- Starts at
- Free
- Free plan
- Free and open source under the GPL-3.0 license, with no ads, tracking or account. The project takes donations through GitHub Sponsors, Patreon, PayPal, Liberapay and Open Collective.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Fossify Calendar | $0 | The complete app, installed from Google Play or F-Droid, with no ads or in-app purchases. Donations are optional. |
Read from play.google.com on Oct 9, 2026. Prices change, so confirm with Fossify Calendar before you buy.
Works with
Fossify Calendar alternatives
- Fossify Calendar vs Proton Calendar
Free plan · from $3.99/mo
- Fossify Calendar vs Tuta Calendar
Free plan · from €3/mo
- Fossify Calendar vs Google Calendar
Free plan · from $7/mo
- Fossify Calendar vs aCalendar
Free plan · from $2.49 one-time
Common questions
Is Fossify Calendar free?
Yes. Fossify Calendar is free to use. Free and open source under the GPL-3.0 license, with no ads, tracking or account. The project takes donations through GitHub Sponsors, Patreon, PayPal, Liberapay and Open Collective.
How much does Fossify Calendar cost?
Fossify Calendar lists one plan. Fossify Calendar: $0. Prices were read from play.google.com on Oct 9, 2026.
What platforms does Fossify Calendar work on?
Fossify Calendar is available on Android.
Does Fossify Calendar have an iPhone app?
No iPhone app was listed when its pages were read on Oct 9, 2026. Fossify Calendar is listed for Android.
Does Fossify Calendar have a Windows app?
No Windows app was listed when its pages were read on Oct 9, 2026. Fossify Calendar is listed for Android.
Is Fossify Calendar open source?
Yes. Fossify Calendar is open source, according to its own site.
Does Fossify Calendar work offline?
Yes, according to its own site. What works without a connection differs by plan and platform, so check the vendor's page for the detail.
What does Fossify Calendar integrate with?
Fossify Calendar's listing names Google Calendar, Outlook, Nextcloud and Exchange. A listing names up to eight integrations, so it may connect to more.
Who makes Fossify Calendar?
Fossify Calendar is made by Fossify.
What are the alternatives to Fossify Calendar?
The closest alternatives to Fossify Calendar in our directory are Etar, Proton Calendar, Tuta Calendar, Google Calendar and aCalendar. Each one has a side-by-side comparison with Fossify Calendar.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 9, 2026.