Finally write the book that's been stuck in your head.
Tell Penveil about your idea — even just a rough concept — and get a complete chapter outline, characters, and direction for every section before you write a word. Each session picks up right where you left off. 14-day free trial, no credit card required.
How the system works
Penveil is a structured writing system for finishing books. Three layers of structure work together to keep your story consistent and your writing moving forward.
- Blueprint: title, premise, full chapter outline, characters — generated in under 60 seconds
- Chapter contracts: purpose, conflict, and state change defined before you write each chapter
- Guardrails: your established story rules surfaced as you write — contradictions caught early
- Four writing modes: Co-Write, Guided, Voice dictation, and Free Write
- Import your existing draft (.txt or .docx) and pick up where you left off
- Export to Word, PDF, or ePub — your writing is never used to train AI models
Pricing
Basic — $12/month: Book blueprint, guided and co-write modes, Story Bible, PDF and Word export. ~375,000-word monthly writing allowance.
Pro — $25/month: Everything in Basic plus voice dictation, full editing suite, Tone Lock, and publishing tools. ~1.5 million-word monthly writing allowance.
Lifetime — $599 one-time: All Pro features, forever. Pay once, no monthly fees.
All plans include a 14-day free trial with no credit card required.
Genres Supported
Memoir & Autobiography · Literary Fiction · Self-Help & Business · Children's Books · Academic Papers · Song Lyrics · Fantasy & Sci-Fi · True Crime · Motivational
Your writing stays yours
Your manuscripts are private by default and never used to train AI models. Export your work at any time as Word, PDF, or ePub. You own 100% of what you write.