Kosshi Outliner

Markdown, images, device sync

Free · In‑App Purchases

A fast, native outliner. Now smooth on large outlines, with refined keyboard shortcuts. Markdown, images, iCloud sync. One-time purchase. Kosshi is a fast, native outliner. Simple and smooth on large outlines. Available on Mac, iPhone, and iPad — one purchase covers all three. Outliner Hit Tab to indent and build a hierarchy. Collapse what you don't need, drag to move things around. Zoom In / Zoom Out Zoom into any row and only its contents are shown. Breadcrumbs tell you where you are, and you can jump home anytime. Markdown Bold, italic, highlight, links, checkboxes, code blocks, and LaTeX math all render right where you type. Formatting markers only appear while editing — move away and they're gone. Images & Files Add images by pasting or dragging, and resize however you want. PDFs and videos show as inline previews too. Apple Pencil Sketches Draw sketches with Apple Pencil on iPad. They sync to Mac and iPhone through iCloud. Search Cmd+F to search your whole outline. Matches get highlighted. Replace works too. Dark Mode Switch between light and dark themes. Automatically follows your system setting. Tags Use #tags to categorize and @tags for dates or status. Filter from the sidebar. Internal Links Type [[ to search and link to another row. Build a web of connected outlines. Bookmarks Press Cmd+D to bookmark a row. Bookmarks appear at the top of the sidebar. Prose Mode Switch a row to Prose Mode for long-form writing. Bullets disappear and children stay expanded. Reminders & Calendar Any @tag with a date syncs to Apple Reminders or Calendar. Use @todo(3/15), @meeting(every monday 10:00), and so on. Keyboard Shortcuts Collapse, move, indent — all without reaching for the mouse. Export Export as Markdown, OPML, or plain text. Your data is never locked in. Auto Backup Restore past outlines from daily backups. Feel free to delete outlines you no longer need. iCloud Sync When iCloud is available, your outlines sync across Apple devices via CloudKit. Data is stored in your iCloud account, and the developer cannot access its contents. Pay Once Built natively for speed. Launches quickly and works offline. One-time purchase covers Mac, iPhone, and iPad — no subscription, no account required. A 7-day free trial is available. Feedback Feature requests and bug reports are always welcome. Reach us via the contact form at https://kosshi.app/contact or on X at @shirokumamake.

  • 5.0
    out of 5
    1 Ratings

This release makes editing more dependable: quote blocks, splitting rows, moving the caret across wrapped lines, and zooming all behave the way you expect. New - Collapse and jump to a row's parent with Cmd+↑ on a hardware keyboard - Open release notes and subscribe to the newsletter from Settings Improved - The keyboard toolbar now matches the rounded iOS keyboard and follows light and dark mode Fixed - Fixed the cursor disappearing and the keyboard becoming unusable after zooming in or out of a focused row - Fixed pressing Return in the middle of a row reverting it to its pre-split text - Rebuilt caret movement across wrapped lines, so pressing ↑/↓ from the end of a line no longer jumps to the start - Many quote block editing fixes: splitting a multi-line block into independent rows, highlight alignment, and more - Fixed deeply indented rows compressing to one character per line - Fixed extra line spacing on rows containing [ ] in Japanese, Chinese, and Korean - Fixed double-drawn text during zoom transitions - Fixed Export to OPML dropping line breaks and completed state - Fixed edits to the same row on two devices losing one side's change, and deleted rows not converging across devices - Many other improvements and bug fixes

The developer, Junichi Sato, 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

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

    Seller
    • Junichi Sato
    Size
    • 16.7 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.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 8 more
    • English, French, German, Italian, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Junichi Sato