[alexbaker]

Nextcloud supports list sharing, you can find some free providers at nextcloud.com/signup. EteSync also supports list sharing.

The app itself doesn't include any sharing functionality, but if you set up list sharing through your provider then the shared lists will appear on both user's devices

[firefly_owl]

Hey, thanks for the reply! I will look into this list sharing feature and consider if try to self-host Nextcloud! In the meanwhile I will try Tasks locally, really nice app :)