Introducing Polyz: A Writing App That Actually Helps You Improve

Every writing app promises to make your life easier. Most of them stop at spell check and a clean interface. Polyz does something none of them do: it makes you a better writer.

We built Polyz because we were tired of choosing between tools that organize your manuscript and tools that help you grow as a writer. So we combined both into one desktop app, and then added AI that actually understands what you have written.

Here is what Polyz is, what it can do, and why we think it matters.

A Complete Manuscript Workspace

At its core, Polyz is a manuscript editor built for long-form fiction. If you have used Scrivener, the workflow will feel familiar. If you have not, here is the short version: you organize your novel in a document tree (we call it the Binder), write in a rich text editor, and use views like the Corkboard and Outliner to manage structure at a higher level.

The editor ships with over 50 extensions. Footnotes, citations, track changes, comments, bookmarks, a table of contents, LaTeX math support, formatting marks, auto-pagination with visual page breaks. It is a serious tool for serious work.

You also get:

• Snapshots for per-document version history
• Automatic backups with a full recovery system
• Custom labels and statuses to track your workflow
• Multi-format export to PDF, DOCX, EPUB, Markdown, and plain text
• Word count targets and deadline tracking

None of this is new ground, and that is the point. You should not have to sacrifice core writing tools just because you want AI features. Polyz gives you both.

AI That Reads Your Book

Most AI writing tools work off a single prompt. They have no memory of your characters, no understanding of your plot, and no access to what you wrote three chapters ago. Every suggestion is disconnected from your actual story.

Polyz works differently. Every AI feature has semantic access to your entire manuscript through embeddings. When you ask the AI a question, it searches your text for relevant passages before responding. When it generates suggestions, those suggestions are grounded in what you have actually written.

What this looks like in practice:

Manuscript-aware chat. Ask "What color are Elena's eyes?" and the AI will search your manuscript and answer from your text, citing the specific passage. No hallucinated details.

Ghost text. As you type, AI-generated continuations appear inline. Accept with Tab or keep writing to dismiss. The suggestions reflect your style and story context because the AI has read your book.

Inline editing with diff review. Select a paragraph, describe what you want to change ("make this more tense"), and review a visual diff before accepting. You stay in control of every edit.

Auto-generated story bible. Character profiles, locations, timelines, and relationship maps are extracted automatically from your manuscript. The story bible updates as you write, so you always have a living reference.

Consistency checking. The AI scans your full manuscript for continuity errors. If a character has blue eyes in chapter 3 and brown eyes in chapter 12, Polyz flags it. Same for timeline conflicts and plot contradictions.

Semantic search. Find passages by meaning, not just keywords. Search "where does the protagonist hesitate" and get contextually relevant results across your entire manuscript.

The common thread: every feature works because the AI has read your book. That is the difference between a writing tool with AI bolted on and an AI writing tool built from the ground up.

The Writing Coach

This is the feature no other writing app has.

Polyz includes a structured coaching system that evaluates your craft across 13 skill categories: prose style, dialogue, characterization, plot structure, pacing, show vs. tell, point of view, setting and description, voice and tone, tension and conflict, theme, sentence mechanics, and revision craft.

This is not grammar checking. Grammarly already does that. This is craft coaching, the kind of feedback you would get in an MFA workshop or from a professional editor.

How it works:

Step 1: Diagnostic assessment. You write a short piece. The coach evaluates it across all 13 skill areas and establishes your baseline.

Step 2: Adaptive lesson plan. Based on your diagnostic results, the coach generates a 30-unit curriculum. It targets your weakest skills first and builds progressively.

Step 3: Craft lessons. Each unit opens with a teaching essay that explains a specific technique. The lessons include annotated examples from published fiction showing the technique in action.

Step 4: Exercises. You write directly in the editor, responding to prompts designed to practice that specific skill. The AI never writes for you during coaching. That is a hard rule.

Step 5: Rubric-based grading. Every exercise is evaluated on 4 to 5 criteria specific to the skill being taught. You get a score, line-level annotations, and concrete revision suggestions. Not "good job" or "needs improvement," but specific feedback like: "Telling, not showing. What does sadness look like in her body? What sensory details ground this moment?"

Step 6: Revision. The coach gives you a focused revision task. You rewrite and resubmit. Your score updates to reflect real improvement.

Step 7: Progress tracking. Every graded exercise earns XP in the relevant skill category. You can see your growth across all 13 areas over time.

The coaching system adapts to you. It remembers your strengths and weaknesses, adjusts difficulty, and avoids repeating topics you have already mastered. It is the closest thing to a private writing tutor that scales.

What Makes Polyz Different

There are a lot of writing apps. Here is why Polyz stands apart.

It is three tools in one. Manuscript management, AI assistance, and structured coaching all live in the same application. You do not need Scrivener for organization, ChatGPT for AI help, and a separate course for craft development. Polyz handles all three.

The AI is not generic. Every AI feature reads your manuscript before responding. Suggestions, edits, and chat answers are all grounded in your actual text. This eliminates the biggest problem with AI writing tools: responses that ignore the context of your story.

The coaching system is unique. No other writing app offers structured, rubric-based craft evaluation. This is not AI generating text for you. It is AI evaluating text you wrote and helping you get better at writing it.

It respects your writing. Ghost text suggestions are optional. Inline edits require diff review before acceptance. The coaching system never writes for you. Polyz is built on the idea that writers should stay in control.

Pricing

Polyz is free during beta. When we launch paid plans, the structure will be:

• Free includes the full editor, organization tools, and basic export. AI chat is limited to 20 messages per day, and coaching covers the diagnostic assessment.
• Pro at $12/month (billed annually) unlocks unlimited AI chat, the full 30-unit coaching curriculum, ghost text, inline AI editing, the story bible, semantic search, and all export formats.
• Studio at $23.20/month (billed annually) adds access to more powerful AI model tiers and enhanced story bible features.

Early adopters who join the waitlist during beta get 50% off their first year.

Try It

Polyz is in active beta. The full app is free to use right now, and we are shipping new features weekly. If you are a fiction writer who wants a tool that helps you write and helps you improve, join the waitlist and see for yourself.