Lyunotes is a note-taking app for Windows and iPhone, with per-note Resources for your files and optional zero-knowledge encryption you control notebook by notebook. Notes that live on your machine, in your cloud, under your key. No account required. Right now, no server of ours holds a copy. No door we could open even if we wanted to.
Explore the features → Common questions →
Today, that's a local folder or whatever cloud you already use — bring your own cloud. Wherever your notes end up, we never hold the key that unlocks them.
Turn encryption on notebook by notebook. The password stays on your device — we never see it, store it, or hold a key that could replace it.
Your vault is a folder you control, wherever you keep it. Attachments in unencrypted notebooks keep their original filenames — encrypted ones trade that for privacy, hiding even the names.
Turn it on per notebook. We never see the key.
Learn more → 02Fast to create, easy to find, never locked into one view.
Learn more → 03Every note has its own resource space — and on your phone, paper becomes a PDF on the spot. Even in an encrypted notebook, each note's Resources (the files that belong to the note) stay encrypted; open them in Lyunotes, or on Windows mount them as a virtual drive and open and edit them in other apps.
Learn more → 04A theme decides how a notebook looks and how it works. Choose one per notebook, switch any time.
Learn more → 05Group notes without moving them — one note, as many folios as it belongs in.
Learn more → 06Bring your notes in from Evernote, UpNote, OneNote, or any Markdown/HTML export — and export back out whenever you want.
Learn more →
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