Lunaver

Private offline AI book studio

Only for Mac

Free · In‑App Purchases

Mac

New in 1.0.4: stronger privacy, honest announcements, dependable writing. Print, eBook, audiobook and Braille from one source — fully voice-operated, offline & private. Lunaver writes your book — offline, private, on your Mac. Lunaver is an AI writing studio for novels, novellas, memoirs, non-fiction, thriller, fantasy, romance and mystery. From the first sentence to a finished manuscript, with a clear workflow for plot, characters, chapters and a Story Bible. Your text stays on your Mac. 13 AI AGENTS, NOT ONE CHATBOT Lunaver is not a single chatbot. 13 specialized AI agents work together: narrative architect, creative writer, literary critic, style editor, consistency guard, character psychologist and more. The result is more consistent, deeper and more literary than output from one model. LOCAL AND PRIVATE — NO CLOUD REQUIRED Lunaver uses Apple Foundation Models and optional local MLX models right on your Apple Silicon Mac. No account. No login. No trackers. No analytics. All AI writing runs entirely on your device. STORY BIBLE & QUALITY LOOP Manage characters, settings and plot threads with automatic consistency checking. The quality loop scores every chapter (pacing, dialogue, show-vs-tell, character depth) and refines it surgically — quality over volume. YOUR IDEA BECOMES YOUR BOOK Just say: “I have an idea” — Lumi, your assistant, listens, keeps it safe, and can start a whole book from it. In your own words, no forms. And every chapter keeps its version history: listen to earlier drafts and restore one with a single command. 8 EXPORT FORMATS — ONE MANUSCRIPT, MANY BOOKS • EPUB 3.3 for Apple Books and Amazon KDP • PDF, print-ready at 6×9" • Word/DOCX for editors and publishers • Audiobook as M4B with chapter markers • DAISY 3 for accessible audiobooks • Braille (BRF, Unicode, UEB Grade 1+2) • Markdown and plain text ACCESSIBLE BY DESIGN Accessibility is not an afterthought in Lunaver — it is the foundation. Built by a visually impaired developer. VoiceOver-first navigation, full keyboard workflows, voice control with dictation, Apple TTS audiobook for proofreading by ear and Braille export are built in. The unique sound guide lets you hear what the app is doing and where your cursor is. FREE AND PRO Free: writing, blueprints, Story Bible, voice control, and ALL exports — PDF, EPUB, Word/DOCX, KDP packages, Braille and Apple TTS audiobook (with a subtle Lunaver watermark). Pro: watermark-free exports, AI cover generation, Focus Mode, writing sprints and extended Lumi support. MY PROMISE Lunaver is a labor of love. I welcome constructive feedback and want this app to grow together with you. Profits are donated to organizations supporting blind and visually impaired people — reported transparently every year on lunaver.app. Your book deserves a home. Write it, narrate it and publish it — fully private on your Mac. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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This update has one theme: reliability you can hear. • Your privacy, consistently: your memory consent now applies to reading too — without your consent, stored conversation data never flows into any answer • Honest EPUB export: if chapters are missing from the finished book, Lunaver tells you — instead of announcing success • Dependable writing: your prose is guaranteed to be written by the model you chose — never silently on a helper model • More stable Lumi: no more freezing when the AI stalls — and no more double voice • Audiobook export: your chapter selection now applies per project — choices in one book no longer affect another • A real Back button — and occasional announcements can be muted And Lumi understands you even more reliably: • Answer in your own words: “Yes”, “Sure”, “Okay” or “No thanks” — even with dictation punctuation (“Yes.”) • No more repeat loops: if Lumi can’t match your answer twice, she says so honestly and lets the question go • “No, read me chapter 3” — after a no, Lumi executes your new command right away • Lumi knows your characters: “Who is Elias?” is answered with real knowledge from your book • The Idea Companion reliably starts your book on a simple “Yes” • Model recommendation: your “Yes” really starts the download — with audible progress • When you resume a book, you now hear honestly from which chapter it continues • Better books: carefully curated, high-quality writing models and more robust book planning • Quitting is honest: Lunaver tells you what’s still running and how to close safely • Your data: “Delete conversation history” verifiably removes all stored conversation data • Switching projects and restarting reliably keeps your conversation context Plus many refinements for VoiceOver and voice control. Thank you for your feedback — it lives in every line of this update.

The developer, Klaus Dr. Weber, 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
    • Klaus Dr. Weber
    Size
    • 549.6 MB
    Category
    • Productivity
    Compatibility
    Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • English and German
    Age Rating
    16+
    In-App Purchases
    Yes
    • Lunaver Pro Annual $69.99
    • Lunaver Pro Monthly $9.99
    Copyright
    • © 2026 Dr. Klaus Weber