Calendars

Calendar apps and the tools that sync them, for anyone leaving Google Calendar. For a private calendar app, we look for open-source code, no ads or tracking, and open standards like CalDAV so your events can move with you.

Our top picks: Fossify Calendar, a simple open-source Android calendar with no ads, no tracking and no account. On its own it only shows the calendars already on your phone, so pair it with DAVx5, an open-source app that syncs calendars, contacts and tasks with any CalDAV server, free on F-Droid.

Our guide to Google alternatives covers the rest of Google too.

How we choose: we check every app against the 6 principles in our manifesto (who owns it and how it makes money, what it collects, how it treats people, honesty, openness and staying power). Last checked on 13 October 2026.