rune Studio
Long-form editor by a novelist
Only for Mac
Free · In‑App Purchases
Mac
Pick up where you left off, instantly.
Files, layouts, tabs: saved together, restored in one click.
Markdown editing, EPUB export. By a novelist, for long-form writing.
Resuming a draft is often harder than starting one.
Every writer knows that heavy feeling of getting back into the work.
rune Studio wipes that feeling away.
rune Studio is a text editor for long-form writing. Built around one core idea, getting you back into writing in seconds, it includes only what writers actually need.
◆ Save and restore your entire workspace
Open files, split layouts, multiple tabs, sidebar width, even cursor positions: all saved as a workspace. Next time, one click restores everything exactly as you left it. The friction of resuming work drops to almost nothing. You just press the workspace button. Questions like "where did I leave off?" disappear.
◆ Split panes for parallel writing
Combine vertical and horizontal splits to lay out your screen any way. Read the previous chapter while writing the next. Keep notes open while drafting. Arrange multiple scenes side by side. Configure your screen to match how you think.
◆ Markdown and custom notation
Write in Markdown for headings, bold, italic, lists, tables, links, images, and more, plus custom notation for advanced layouts. Switch to live preview to see the rendered result.
◆ Manage multiple writing projects
Each project lives in its own workspace. Switch between novels, essays, and side projects with one click. Each preserves its own files, tabs, and layout independently.
◆ One-click EPUB export
Export your manuscript as an EPUB with one click. Publish on KDP, Apple Books, Kobo, or share privately. Your work, ready to be read.
◆ Built by a novelist, for writers
rune Studio was created by a novelist. Every feature comes from real writing needs. Nothing extra. Nothing missing.
[Main features]
▼ Writing
- Highlight system: text highlight, emphasis words, same-word highlighting
- Line numbers and editing marks (line breaks, tabs, spaces)
▼ Workspace
- Workspace: save and restore your entire setup
- Flexible split panes (vertical, horizontal, nested)
- Multiple tabs and file tree
- Switch between multiple workspaces
- Companion apps (auto-launch alongside the workspace)
▼ Search and structure
- Workspace-wide full-text search
- Outline panel (auto-generated from headings)
▼ Markdown and EPUB
- Markdown and custom notation editing
- EPUB export
- Markdown live preview
▼ Reliability
- Auto save
- Save-as fallback dialog
- External change detection
- Settings export and import (portable across Macs)
▼ UI
- Japanese and English UI
- Font, line height, and heading color customization
Pick up where you left off, anytime.
A long-form text editor that makes resuming your writing effortless.
First 30 days free.
Terms of Use: https://rune.naoya.site/en/privacy.html#terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fixed an issue where importing an exported settings file failed with an "access denied" error.
- Settings export no longer silently skips workspaces without folder access. A warning is now shown before export.
- Fixed an issue where files outside the workspace were not restored on relaunch.
- Fixed an issue where renaming an out-of-workspace file from its tab prevented it from being restored on next launch.
- Fixed a confusing "(null)" alert that appeared when launch items included files or apps outside the workspace.
- Fixed an issue where deleting a workspace from the Welcome screen did not remove its folder.
- Fixed an issue where the hidden workspace file remained at the old location after moving a workspace folder.
Other minor improvements.
The developer, disolo Co., Ltd., 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DISOLO K.K.
- Size
- 1.8 MB
- Category
- Productivity
- Compatibility
Requires macOS 13.0 or later.
- Mac
Requires macOS 13.0 or later.
- Mac
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- rune Studio Yearly $29.99
- rune Studio Monthly $2.99
- Copyright
- © 2026 disolo Co., Ltd.
