@toran You can add to @obsidian@obsidianmd using #FleetingNotes and store those notes within the app (also available as a browser extension or PWA). The notes are written directly into your vault and live in their own folder with front matter, but you cannot access non-FA notes that are already in the vault. I am not affiliated with Fleeting Notes, but I like their product a lot and it is a great way to add notes on the go or when you only have browser access and can't install Obsidian.