SuperNotes

A native SwiftUI notes app for macOS, iPhone and iPad from a single shared codebase — an Apple-Notes-like experience where the notes are actually Markdown, with genuine WYSIWYG ↔ raw Markdown round-tripping instead of fragile visual tricks.

Offline-first with local persistence, AES-GCM encrypted sync over SuperSync with Keychain-backed keys, attachments with resumable large-file support, nested folders, and revision history with line-level diffs and restore — git energy for your grocery lists. Conflict-safe sync with manual merge when two devices disagree.

It doubles as the live validation client for the SuperSync platform, which means every sync feature gets beaten mercilessly before anything else ships on it.