Your manuscript
deserves a developmental editor
Eight specialized engines that analyze your fiction like a professional editor — without touching a word of your prose. No AI generation. Pure analysis.
The editing gap
Great writing tools miss the structural layer
Developmental editing costs €1,000–3,500
Professional structural feedback is essential but unaffordable for most writers. You need to know if your story works before investing in a pro.
Writing tools catch typos, not story problems
Grammarly finds your comma splices. But who tells you your two main characters sound identical? Or that a plot thread from Chapter 3 was never resolved?
AI writing tools want to write FOR you
You don't need a robot co-author. You need an analytical reader that respects your voice and gives you structural insight — nothing more.
The engines
Eight analysis systems. One manuscript.
Engine 01
Voice Fingerprinter
Every character should sound unique. The Voice Fingerprinter extracts all dialogue and runs 8 statistical metrics per character — then computes cosine similarity to flag characters who speak too much alike.
Characters detected: 4 | Dialogue chunks: 847
Chapters: 32 | Threads tracked: 14 | Issues: 6
Engine 02
Plot Hole Detective
Four systematic detection systems process your full chapter structure and track every thread, character, location, and knowledge event across your manuscript.
Engine 03
Cover Brief Generator
A designer-ready brief derived entirely from your manuscript — no prompts, no guesswork. Hand this brief to any cover designer and they'll understand your book immediately.
Generated from manuscript analysis. No AI.
Chapters: 24 | Avg length: 4,100 words | Score: 0.59
Engine 04
Pacing Analyzer
Measures rhythm and flow chapter by chapter. Detects slow sequences, abrupt changes, and chapters that are too long or too short relative to your manuscript's norm.
Engine 05
Crutch Word Detector
Finds overused filter words, unnecessary adverbs, and show-vs-tell markers. Per-chapter heat map shows exactly where your prose leans on weak patterns.
Total: 187 crutch words | Density: 7.6 per 1,000 words
Mapped: 11/15 beats | Gaps: 1 | Misplaced: 3
Engine 06
Beat Sheet Mapper
Maps your story to the Save the Cat 15-beat template — the industry-standard story structure framework that breaks every narrative into key turning points (catalyst, midpoint, all is lost, finale, etc.). The mapper auto-detects where your beats fall, flags gaps and misplaced moments, analyzes act balance, and charts your emotional arc via sentiment scoring.
Engine 07
Blurb Generator
Extracts protagonist, antagonist, setting, themes, conflict, and stakes from your manuscript. Generates three marketing templates — no AI writing, just structured extraction from your own words.
Protagonist: Elena | Antagonist: Marcus | Genre: Thriller
Words: 22,100 → 24,600 (+2,500) | Intensity: 42%
Engine 08
Draft Differ
Compares two manuscript versions to track revision progress. Detects chapter-by-chapter word count changes, added and removed chapters, revision intensity, and even character name changes between drafts.
Comparison
How Writers Toolkit compares
| Feature | Writers Toolkit | ProWritingAid | AutoCrit | Marlowe |
|---|---|---|---|---|
| Voice Fingerprinting | ||||
| Plot Hole Detection | ||||
| Pacing Analysis | ||||
| Crutch Word Detection | ||||
| Beat Sheet Mapping | ||||
| Blurb Generation | ||||
| Draft Comparison | ||||
| Cover Brief Generator | ||||
| 100% Offline / Private | ||||
| No AI Generation | ||||
| Price | Free / €19 mo | €20 mo | €30 mo | €19 mo |
ProWritingAid and AutoCrit excel at line-level editing. Writers Toolkit operates at the structural layer. They are complementary, not competing.
Pricing
Start free. Stay forever.
Every plan includes all eight engines. No upsells per feature.
- Unlimited analyses
- JSON data exports
- Dashboard integration
- Priority processing
- Everything in Pro
- 2 months free
- Everything in Pro, forever
- All future engines included
Built by a fiction writer
Writers Toolkit was built for fiction writers, by a fiction writer. Every design decision comes from the real pain of manuscript revision.
166 tests passing
Deterministic analysis. Same input always produces the same output. No randomness, no hallucination, no surprises.
100% offline
Your manuscript never leaves your machine. No account required for the free tier. No data sent anywhere. Ever.
Testimonials
Writers love their results
“The voice fingerprinter caught that my two leads sounded identical. My beta readers had been saying 'something feels off' for months. This found it in seconds. Then the pacing analyzer showed my middle act dragged — I tightened three chapters and the whole book came alive.”
Caught a timeline error that would have been embarrassing
Plot Hole Detective found a character who knew about a murder before it happened in my timeline. Would have been embarrassing to publish that. Three beta readers missed it. The tool found it in seconds.
My designer was impressed
The cover brief I generated was so detailed my designer said it was the best brief she'd ever received. Saved me an entire revision round.
Finally understood why my middle act dragged
The pacing analyzer showed me exactly why my middle act dragged. Three chapters flagged as slow sequences. I tightened them and my beta readers noticed immediately. The pacing curve visualization made it so obvious in hindsight.
The beat sheet changed everything
Beat Sheet Mapper found that my story was missing a clear 'All Is Lost' moment. Adding one transformed the emotional arc entirely. I've been writing novels for years and never thought to check my structure against the 15-beat template. Game changer.
70 crutch words I never noticed
I had 'just' and 'really' everywhere — 70 times combined. The crutch word heat map showed Chapter 8 was the worst offender. Targeted revision, not guesswork. I also learned I use 'seemed' way too much. The show-vs-tell category was eye-opening.
Draft differ tracked every single change
The draft differ tracked every change between my v1 and v2. 42% revision intensity across 28 chapters — it even caught that I'd renamed a character and showed me the before/after. I use this after every editing pass now. Essential for series writing.
Makes a big difference vs. writing without feedback
I've been writing novels for six years and this is the first time I've completed a revision in under a month. The combination of pacing + crutch words + voice analysis gives you a structural roadmap. I also learned a ton about my own patterns.
Blurb generator saved me hours
I dread writing blurbs more than writing the actual novel. The blurb generator extracted my protagonist, antagonist, and themes automatically. The query pitch template was 90% ready to send.
Voice fingerprinting is incredible
My writing group kept saying my characters sounded the same but couldn't tell me why. Voice Fingerprinter showed me: identical contraction ratios and formality scores. Now each character has a distinct statistical fingerprint.
FAQ
Common questions
No. Writers Toolkit is pure statistical analysis. It reads and measures your prose but never generates a single word. Your voice stays yours.
Markdown (.md) manuscripts with chapter headers. We’re adding Scrivener and DOCX support soon.
Yes. All eight engines handle manuscripts of any length. The voice fingerprinter extracts all dialogue, the pacing analyzer measures chapter rhythm, and the plot hole detective processes your full chapter structure.
Completely. Writers Toolkit runs 100% on your local machine. No data is sent anywhere. No account required for the free tier.
ProWritingAid excels at line-level editing: grammar, style, word choice. Writers Toolkit operates at the structural level — character voice consistency, plot integrity, pacing flow, beat sheet alignment, blurb generation, draft tracking, and visual marketing. They’re complementary, not competing.