I’ve released a plugin that enables Obsidian to sync fold states across devices. These folds are also known as creases.
Currently, Obsidian stores fold states within localStorage, which individualises these across devices. My plugin monkey patches all localStorage fold actions, and places them within the the sync-folds data.json file, which does sync between devices. Thus enabling consistent fold states across multiple devices.
It’s currently awaiting PR approval and merge to be available within the plugin store, but for now you can install it manually from here: GitHub - itsonlyjames/obsidian-sync-folds: Obsidian plugin that enables syncing of fold states across devices