EteSync

EteSync is a secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars and tasks. It's fully open-source (clients and server), with clients available for Android, iOS, the desktop and the web.

In order to use the EteSync sync you need to have an account with EteSync (paid hosting), or run your own instance (free and open source). Check out the EteSync website for more information.

Setup

The EteSync Android client can populate Tasks with data, or you can enter your credentials into Tasks and synchronize directly with your EteSync host