openote - AI Markdown Notes
On-device AI Notes · Mermaid
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
openote — On-device AI Markdown Notes
AI that runs on your device. Standard .md files. iCloud Drive sync.
openote keeps your notes truly yours.
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WHY OPENOTE?
iCloud Drive sync
openote syncs your notes across all your devices through your own iCloud Drive. No third-party servers in between.
On-device AI (iOS 18.1+)
Summarize a note in one tap. Get smart tag suggestions. Turn plain text into Mermaid diagrams. Powered by Apple Foundation Models running entirely on your device — fully offline, no data leaves your device.
Real-time Mermaid diagram preview
Write diagrams in markdown and see them render instantly. Flowcharts, sequence diagrams, class diagrams — no plugins, no internet required.
Standard .md files
No proprietary format. Open them in any editor, on any platform. Move them out anytime. Truly lock-in free.
No account. Fully offline.
No sign-up. No email collected. No tracking. AI runs only on your device.
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CORE FEATURES
Markdown Editor
- Real-time syntax highlighting
- Auto-save every 0.5 seconds
- Customizable toolbar (markdown, lists, Mermaid shortcuts)
- Word and character count
Smart Search
- Full-text search across title and body (FTS)
- Highlighted search results
- Korean, English, and Japanese search support
Tags and Folders
- #hashtag syntax for instant categorization
- Tag autocomplete
- Folder-based organization
AI Features (iOS 18.1+)
- Note summary (one tap)
- Smart tag suggestions
- Text to Mermaid diagram conversion
Mermaid Diagrams
- Live preview
- Pinch to zoom and pan
- Offline rendering (no CDN required)
Export
- PNG export
- Open .md files on Mac
Siri and Shortcuts
- "Create a note in openote"
- "Search openote for..."
- Spotlight search integration
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PRO UPGRADE
For power users who want more:
- Unlimited AI usage
- 10+ premium themes (Midnight, Nord, Dracula, and more)
- Transparent PNG, PDF, SVG export
- 3x high-resolution output
- 12+ exclusive Pro app icons
- Accent color customization
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WHAT MAKES OPENOTE DIFFERENT
- Syncs through your own iCloud Drive
- AI runs on your device, not on a server
- Native Mermaid preview, no plugins
- Notes are standard .md files you can open anywhere
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PRIVACY
- No account required
- No email collected
- Notes never sent to any server
- AI runs entirely on your device
- iCloud uses only your own Apple account
Your notes are yours alone.
openote — Write freely. Own everything.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
iCloud sync is now more reliable, keeping your notes safe and consistent across all your devices.
New sample notes help you get started right away.
Plus various stability and performance improvements.
The developer, Wooyoung Kim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Wooyoung Kim
- Size
- 9.2 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Korean
- Age Rating
4+
- 4+
- Copyright
- © 2026 wooyoung Kim