Author-in-the-loop writing studio
Write the whole book. Keep every decision.
ptr.services plans, drafts, edits, illustrates, translates and packages your book — and hands you a proposal at every step instead of quietly rewriting your prose.
Works as an app on iPhone and a full studio on desktop
Everything a book needs
Setup that actually shapes the book
Premise, genre, audience, tone, POV and standing instructions. Rules like “no em dashes” are honoured in every generation.
Proposals, never silent rewrites
Edit passes return a diff. Accept and reject line by line, and your previous text stays in version history.
The price before the spend
Choose between three engines and see the exact credit cost of an action before you run it.
Illustrated books, spread by spread
Pair page text with its art brief, keep one consistent art style, approve each spread.
New editions, same voice
Translate a finished manuscript into a separate edition. The original is never overwritten.
Publishing, checked
Blurb, categories and keywords, a pre-flight checklist, manuscript export and a public author page.
How a book gets made here
- 1Choose fiction, non-fiction or illustrated
- 2Set the premise, voice and standing rules
- 3Build the cast and the chapter outline
- 4Draft, edit and review every proposal
- 5Translate, package and publish
Your voice is the constraint, not the AI's
- Standing instructions checked on every generation
- Full version history on every chapter
- Imported manuscripts kept read-only
- A credit ledger of every AI action