MythFlow
A local-first desktop app for serialized novels, short fiction and interactive stories — driven by an AI agent that manages worldbuilding, characters, long-range memory, reviews and revisions, so chapter #200 still remembers chapter #1.
Get MythFlow — $39 How it worksTell it what you want to write. The agent builds the foundation, then runs a disciplined loop for every chapter — the way a serious serial author works.
From one creative brief, the agent generates worldbuilding, a character matrix, volume outlines and per-chapter intents.
Chapters are drafted against your genre's rules — pacing, payoff structure, taboo lists — with the right context pulled in automatically.
Every draft passes an audit: consistency, pacing, character drift. Failed checks trigger targeted revision, not a blind rewrite.
Story state, relationships and foreshadowing settle into memory, so the next chapter starts from the truth of the last.
One workspace for long serials, standalone shorts, covers and playable stories.
Layered context (protected vs. compressible), story-state snapshots and semantic compression keep hundred-chapter serials coherent — old history never drowns the current instruction.
One idea in → complete story out: outline, full text, review notes, sales blurb, and an AI-generated cover through your image provider.
Create a world with one sentence, then play it: free actions, clickable choices, world contracts, character agents, items, evidence, relationships and auto-illustration.
Branching plots, variables and flags, multiple endings, node images and storyboards — export-ready packages for interactive drama, built from your ideas or your existing books.
Built-in genre profiles (wuxia, xianxia, sci-fi, horror, LitRPG…) steer chapter types, pacing and payoff. Add your own as plain Markdown.
Skill packs inject professional rules into chat, long-form and play sessions. Every built-in prompt pack is viewable and editable per project.
Archive documents, notes and images as searchable reference material with evidence traces — research once, cite everywhere. Built-in web research with sourced reports.
Works with OpenAI-compatible APIs — OpenRouter, DeepSeek, Kimi, GLM and more. Pay providers at cost; typical spend is a few dollars per book.
Manuscripts, settings and keys are plain files on your disk (Markdown you can open anywhere). We run no servers and see nothing.
The same workspace in English or Chinese — dark and light themes included.
MythFlow ships regular releases with new features and bug fixes, tracking the fast-moving upstream engine. The built-in updater quietly tells you when a new version is ready — one click to get it.
Need a tailored workflow, a private deployment, or an integration for your team or studio? Custom development is available — write to contact@mythflow.app or open an issue on GitHub and tell us what you're building.
One-time purchase · all platforms · updates included
Buy on itch.ioLaunch price $29 for early buyers.
Includes priority updates and email support.
No subscription to us, ever. You bring your own API key from any OpenAI-compatible provider (OpenRouter, DeepSeek, Kimi, GLM…) and pay them directly for what you use — typically a few dollars for a novel-length project, with no markup from us.
Yes. MythFlow is a local app: manuscripts and keys are files on your own disk. Text is sent only to the AI provider you configure, and to no one else. We run no servers and collect no data.
Chinese and English are first-class — the writing pipeline, genre rules and UI support both. It is especially strong for Chinese web-novel genres (wuxia, xianxia, xuanhuan) with dedicated genre profiles.
macOS 11+ (Intel and Apple Silicon), Windows 10+, and Linux (AppImage / deb). Your library is a folder of Markdown files — move it between machines freely, or point the app at any folder you like.
Nothing — they're plain Markdown files in your documents folder. No lock-in, no export hostage: your words are always just files you own.