UpNote: Cloud note app with scheduled offline backup and restore in Markdown (getupnote.com)

Seems to be the only free note taking app that is offline-first with backups in mind without vendor lock-in and forced proprietary format.

Supports Android stylus/Apple Pencil drawing as bonus.

Joplin comes second but is difficult to setup, lacks versioning, trash bin, auto-backup, and slow react native mobile app that doesn't sync in the background.

Obsidian Sync is close but expensive and the app doesn't offer local auto-backup/versioning.

Notability backups to any cloud as well, but it's stylus optimized.