dpflug

Yes, but the spec is intentionally flexible about some things, so a bit of work has to be done to ensure compatibility.

I have been pooped on by a spider.

They wouldn’t even accept my card for mysterious reasons. Only time I’ve had that problem.

I’d use something that already exists:

• https://life-notes.fr/
• https://github.com/babybuddy/babybuddy
• https://github.com/BabyTracker/baby-tracker

The focus of the latter two is slightly off, but it would work.

Actually, I’d probably not add a use-specific thing unless I needed something specific it offered. I’d just pop up another page on our shared wiki to track things, or put it in a synced note app.

Syncthing is another nice option for syncing Obsidian notes.

You’ll want to use Syncthing-fork on Android.