A local-first note app optimized for the Zettelkasten method. Connect your knowledge with tags, Zettel links, and backlinks. Now syncs across all your devices via iCloud.

Turn your knowledge into a growing asset.

ZettelkastenNote is a card-based knowledge management app inspired by the Zettelkasten method — a system where you capture ideas as small cards and connect them to build a growing web of knowledge.

Organize Your Thinking

• Capture ideas as atomic cards (Zettels) with notes
• Group related ideas together
• Turn scattered thoughts into structured insights

Intuitive & Simple

• Drag & drop to reorder freely
• Swipe for quick access
• Clean, distraction-free interface

Privacy First

• Local-first design
• Your data stays on your device and (optionally) in your private iCloud
• No tracking, no ads, no third-party data sharing

Sync Across Devices (Optional)

• iCloud sync across all your Apple devices
• Toggle sync on/off anytime in Settings
• Works fully offline when sync is off

Perfect For

• Capturing fleeting ideas before they disappear
• Organizing what you learn from books and articles
• Building a personal knowledge base over time
• Collecting problem-solving insights

Download free and start building your knowledge system today.