My partner and I have been using the FamilyWall app, which let's us both update and see a shared calendar and various shopping and to-do lists on each of our respective devices.
It's a useful app for our household, but unfortunately it's closed-sourced and comes with a ton of Google trackers, and I'd rather Google and whoever else not know that we need more mayonnaise and that D&D is on Saturday at 5.
Are there any FOSS or near-FOSS apps out there that could possibly replace it?
Thanks.