Write Fiction
Worth Remembering
Story Theorem helps you complete developmental edits and perfect your story in days not months.
Prove Your Story Works
When the right story elements align, your manuscript comes alive. Story Theorem helps you identify what works and shows you how to fix what doesn't.
It's not a formula, it's a proof that your unique story delivers.
Story Theorem is your AI developmental editor — delivering in-depth story analysis, tracking character arcs, and catching structural problems before they derail your draft.
Get the feedback you need, when you need it, without waiting weeks for an editor or deciphering vague beta reader notes.
How Story Theorem Works
1
Upload your draft and get a systematic analysis, not one-size-fits-all suggestions.
2
Discuss feedback like you would with an editor based on your full manuscript.
3
Revise with clarity and avoid overwhelm: insights are delivered at your own pace.
Delta's Promise
Hi, I'm Delta. I'm designed to make revision focused and manageable. I won't give you vague advice like 'develop your characters more.' Instead, you'll get specific, actionable tasks tailored to your manuscript. No overwhelm. Just clear next steps.
— Delta, your AI writing coach
What Makes Story Theorem Different
You don't have to choose anymore between getting advice so vague it's unactionable or feedback so detailed you're drowning in it.
Progressive Disclosure
Information is revealed in digestible chunks, so you never feel overwhelmed by too much feedback.
Actionable Tasks
No vague advice. Every insight comes with specific, prioritized action items you can tackle immediately.
Delta's Guidance
Our friendly AI coach celebrates your strengths and guides you through weaknesses without ever being judgmental.
The Edition in Details
Your story is unique. The principles that make it work aren't. Story Theorem walks you through three focused phases designed to guide you from vision to polished manuscript.
Phase 1: Intent Check
Establish Your Vision
Before you can revise effectively, you need to know what you're aiming for. Delta analyzes your manuscript to reveal what's actually on the page (your genre, themes, characters, and story arc), so you can confirm your vision or refine it.
Delta checks your intent in 5 key areas: genre, arcs, main characters, tropes, and themes.
Phase 2: Structure Edits
Fix the Big Picture First
With your vision clear, it's time to make sure your story's foundation is solid. Structure edits ensure your manuscript delivers on its promise before you dive into the details.
Delta reviews the implementation of those 5 key areas: genre, arcs, main characters, tropes and themes.
Phase 3: Scene Edits
Polish Every Scene to Perfection
With your structure solid, you can refine every scene. Our deep-dive analysis across 10 layers ensures each scene earns its place and does its job beautifully.
Delta derives insights from 60+ variables across 10 layers for every scene.
Pricing
Short Books
or $315/year (save 12.5%)
For manuscripts under 40,000 words
Up to 3 books in parallel
Full 3-phase analysis
Scene-by-scene feedback
Export reports
Medium Books
or $420/year (save 12.5%)
For manuscripts 40,000–100,000 words
Up to 3 books in parallel
Full 3-phase analysis
Scene-by-scene feedback
Export reports
Large Books
or $525/year (save 12.5%)
For manuscripts over 100,000 words
Up to 3 books in parallel
Full 3-phase analysis
Scene-by-scene feedback
Export reports
Request Early Access
Currently in private alpha.
Leave your details and we'll be in touch.
AI developmental editing for novelists who take craft seriously.
Support
contact@storytheorem.com
© 2026 Story Theorem. All rights reserved.
Currently in private alpha: the app is being tested and refined with a few select users. Drive development and get early access by signing up above!