openote - AI Markdown Notes

On-device AI Notes · Mermaid

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

Summarize notes in one tap with on-device AI. Preview Mermaid diagrams in markdown instantly. Sync across all your devices through iCloud Drive. openote — On-device AI Markdown Notes AI that runs on your device. Standard .md files. iCloud Drive sync. openote keeps your notes truly yours. --- 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. --- 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 --- 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 --- 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 --- 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 hasn’t received enough ratings or reviews to display an overview.

macOS support - Native 3-pane layout, Cmd+, settings, Cmd+Shift+N quick note - Use the same .md files across iPhone, iPad, and Mac via iCloud Drive Improved iPad layout - 2-column sidebar + note list + editor, optimized for iPad 13" iPhone - Quick Action: capture a note instantly from the lock screen - Live Activity widget support Enhanced AI (iOS 18.1+) - Slash commands: /research, /translate, /expand, /tags - AI summary, wiki link suggestions, backlinks panel - Per-folder AI access control - Inline AI bar, structuring suggestions Knowledge Graph (new) - Visual graph of connections between your notes - Automatic community detection, insights panel (hubs / bridges / gaps) - Graph Chat: ask questions across your knowledge graph MCP integration - One-click connection with Claude Desktop / Code Editor improvements - Direct Mermaid diagram insert sheet, in-app PDF preview - Tag chips, date range filter, Inbox smart folder Sync stability - Major improvements in iCloud sync speed and reliability - Optimized batch processing for large notes Security - AES-256-GCM at-rest encryption, AI sandbox - OAuth 2.1 + PKCE, hashed token storage Localization - 200+ English and Japanese translation strings polished Stability - Fixed dark mode display issues - Improved camera permission handling - Accessibility and iPad layout fixes

Version 2.0.0

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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Wooyoung Kim
    Size
    • 9 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.
    Languages
    English and 2 more
    • English, Japanese, Korean
    Age Rating
    4+
    Copyright
    • © 2026 wooyoung Kim
  • Privacy Policy

    • More by Wooyoung Kim