Your manuscript deserves more than a grammar check.
Penmark Studio runs six editorial reviews on your book manuscript. Pacing, voice, continuity, structure. The feedback a developmental editor gives, on demand, after every draft.
Start Your Free Trial14-day free trial. No credit card required.
Sudowrite helps you write the book. Penmark Studio helps you finish it.
The gap between finished draft and finished book
Developmental editors cost $2,000 to $5,000 and take six weeks.
Beta readers tell you something felt slow. Not which paragraph, or why.
Grammar tools polish sentences. They miss structure, pacing, and voice.
Penmark Studio fills the gap with editorial feedback modeled on the standards of major trade publishers.
Every pass a professional editor makes
Chapter Review
Evaluates one chapter end to end. Opening strength, pacing, scene construction, voice consistency, and line-level craft, with recommendations ranked by impact.
Continuity Check
Reads across chapters and flags every inconsistency. Character details, timelines, settings, and plot logic, each with the passage and a recommended fix.
Voice Stability
Tracks your voice across the whole book. Sentence rhythm, formality shifts, narrative distance, and point-of-view drift, with specific adjustments.
Developmental Edit
Reviews the full manuscript against bestseller standards for your genre. Story arc, stakes, theme, hook strength, and sagging middle diagnosis.
Line Edit
Marks up a chapter sentence by sentence. Word choice, clichés, dialogue naturalness, and rhythm, with reasoning for every suggested change.
Reader Experience Simulation
Reads as your target audience and reports where attention flags, where emotion lands, and where a reader would put the book down.
Three steps between drafts
Set up your book
Add your title, genre, comparable titles, and voice notes. Every review calibrates to your shelf, not a generic standard.
Run a review
Paste a chapter or your full manuscript. Pick a review type. Get ranked, passage-quoting feedback in minutes.
Revise with a checklist
Feedback becomes action items you mark complete. The revision dashboard tracks what you fixed and what remains, draft after draft.
Why authors choose Penmark Studio
No credits
Flat monthly price. Run reviews as often as your plan allows. No math, no metering anxiety.
Version tracking
Every review links to the exact draft it critiqued. See which feedback you addressed and which you skipped.
Your manuscript stays yours
Your work is never used to train AI models. You retain full copyright and ownership.
Built for one author
No collaboration bloat, no team seats. A private studio for you and your book.
Where Penmark Studio fits
| Capability | Drafting toolslike Sudowrite | Grammar toolslike ProWritingAid | Penmark Studio |
|---|---|---|---|
| Helps you draft | Yes | No | No |
| Fixes grammar | No | Yes | Partial |
| Structural and developmental feedback | No | Partial | Yes |
| Tracks revisions across drafts | No | No | Yes |
| Flat pricing without credits | No | Varies | Yes |
Keep your drafting tool. Keep your grammar checker. Penmark Studio handles the pass in between.
Pricing that respects the work.
No credits. No per-review charges. Editorial feedback on your manuscript, as often as you need it.
Draft
For authors starting out.
$15/month
- 1 active project
- Up to 10 chapters
- 5 reviews per month
- Chapter reviews
- Line edits
- Continuity checks
- Markdown export
Author
For authors finishing a book.
$29/month
- Unlimited chapters
- 25 reviews per month
- All 6 review types including developmental edit
- Full version history
- All export formats
- Revision dashboard
Manuscript Pro
For authors between deadlines.
$59/month
- Up to 3 active projects
- Unlimited reviews
- All review types
- Remove report watermark
- Early access to new review types
Every plan starts with a 14-day free trial of the Author tier. No credit card required.
Founding member rate: lock in the Author tier at $19/month for life. Limited to the first 200 customers.
Questions authors ask
No. It replaces the guessing game between drafts. Use it to get your manuscript strong enough to make a human editor's time count.
No. Reviews run through Anthropic's Claude API, which does not train on customer data. You retain all copyright and ownership.
Literary fiction, commercial fiction, memoir, and narrative nonfiction. Reviews calibrate to your genre and comparable titles.
Sudowrite helps you draft. Penmark Studio reviews what you already wrote: structure, pacing, voice, and continuity.
Chapter reviews finish in about a minute. Full-manuscript reviews take one to two minutes.
Cancel anytime from your account settings. You keep access through the end of your billing period.
Subscriptions are purchased on this website and at app.penmarkstudio.com. The mobile app provides access to your subscription.
Finish the book.
Six editorial reviews. One flat price. Start free today.
Start Your Free Trial14-day free trial. No credit card required.