# Fossify Calendar (open-source calendar and contacts app)

> Fossify Calendar is a free, open-source calendar and contacts app for Android. Securely plan, schedule, and set reminders with our private calendar app. It has 2,205 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid and Google Play.

Tired of cluttered calendars and privacy concerns? Fossify Calendar is here to change that. Your open-source powerhouse for managing life, designed with privacy as its core and packed with powerful features to keep you organized. Here's what makes Fossify Calendar different: AD-FREE AND PRIVATE: Your events remain yours. No ads, no tracking, no intrusive permissions. FLEXIBLE AND CUSTOMIZABLE: Craft events precisely with times, durations, reminders, and advanced repetition rules. SEAMLESS SYNCING: Sync effortlessly with Google Calendar, Outlook, Nextcloud, Exchange, and more.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/FossifyOrg/Calendar |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 2,205 |
| License | GPL-3.0-only (open source) |
| F-Droid | https://f-droid.org/packages/org.fossify.calendar/ (package org.fossify.calendar) |
| F-Droid anti-features | none flagged |
| Google Play | https://play.google.com/store/apps/details?id=org.fossify.calendar |
| App Store | not linked |
| Website | https://www.fossify.org |
| Official | yes (published by the organization behind the product) |
| Category | Calendar & contacts |
| Latest release | 1.11.0 (Sep 23, 2026) |
| Last commit | Oct 8, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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