Lockbook is an open-source notebook for Markdown notes and drawings, encrypted on your device and shared only by invitation. Notes are Markdown files and drawings are SVGs, kept in ordinary folders. Open them in any other app and you'll find nothing missing.
Your notes are encrypted on your device, so no one else can read them, not even us. Sign up with just a username: we never ask for an email, a phone number, or a name.
