you could selfhost AnyType, then if all devices are connected to the same WiFi they sync via P2P.
I find it even better than Notion in fact, because you can define any objects then do whatever you like with them.
What it lacks is the math stuff from tables unfortunately.
not only, you can go ahead and run a Go program as is, without compiling as well 😆
TIL about the one file, 10x for sharing, can you guarantee that runs everywhere?