CardNote

CardNote is a local-first notes app for writing, organizing, and sharing notes as clean visual cards.

Write the way you prefer. Use Normal notes for everyday writing with simple rich text controls such as bold, underline, font size, color, and type style. Use Markdown notes when you want structured writing with preview support.

Keep notes easy to find with folders, tags, search, sorting, pinned notes, archived notes, and trash recovery. CardNote is designed for quick capture first, then gives you enough structure when your note collection grows.

Turn notes into shareable cards. Choose a card style, background color or image, aspect ratio, and the visible section of a longer note. Markdown notes are rendered from preview content, and Normal notes keep their rich text styling where supported.

Your notes stay on your device by default. CardNote does not require an account, does not include ads, and does not use analytics or tracking SDKs. You can export notes or backups when you choose, and you can protect app access with an optional PIN or biometric unlock.

Key features:

- Normal notes with basic rich text formatting
- Markdown notes with preview mode
- Folders, tags, search, sort, pin, archive, and trash
- Postcard-style note card sharing with background customization
- Long-note card window selection
- Export a note as HTML or plain text
- Export and import local JSON backups
- Optional PIN and biometric app lock
- Portrait-first app layout with editor/preview rotation support

CardNote is built for private everyday notes, reading lists, quick ideas, quotes, plans, and shareable snippets.