Your next book starts tonight
Bring your plan, or bring an idea. Either way, you finish with a book.
Subscribe for $25/monthBring your own outline, or start with nothing more than a genre you love. Payperback Writer plans with you, then drafts every chapter, tests it on a reader, edits it twice and gives the whole book a fresh read, before handing you a formatted manuscript and ebook.
You already have an outline, and maybe a writing guide, character notes or a series bible.
Pick what you love to read, and build the whole plan together, one choice at a time.
If you know your story, Payperback Writer follows it. Your outline is the rulebook: the author writes to it, the editors check against it, and reader feedback only changes what your plan allows.
The Blueprint Assistant turns a few choices into a complete plan, and you approve every step.
Whichever way you came in, every chapter goes through the same careful loop, on its own, while you get on with your day.
The care you'd put in by hand, on every chapter, without the copy and paste.
A reader matched to your genre's real audience reviews each chapter without ever seeing your outline, so their reactions are honest.
Continuity, characters knowing too much, twists hinted too early and repetition, checked twice with fresh eyes.
When the last chapter is done, a brand-new reader reads the entire book cold, and the author revises it from their review.
Build a complete blueprint from an idea, for a single book or a whole series, with a series bible.
One list of everyone you've written, by author and series, with a checker that catches name clashes before you use them.
Professional book styles, front and back matter, print layout, and an EPUB for the ebook stores.
Every edit in one line, every review, and a list of anything it decided without you.
It retries when a service is busy, pauses cleanly if credit runs out, and picks up exactly where it left off.
Pick a book style in one click, then fine-tune anything. Change the look any time, even after the book is finished, at no AI cost.
Writing several series, maybe under more than one author name? Payperback Writer keeps one master list of every character you've ever written, so you never reuse a name by accident.
Stick with the model whose writing you already like, or try a cheaper one for drafts. Connect through the AI company's developer account: free to open, pay-as-you-go, and about five minutes to set up with the built-in walkthrough.
If it saves you a few evenings of copy and paste on a single book, it has paid for itself. The real return is volume: the months that produced one book can produce several, each with the reader feedback and editing passes you'd otherwise skip.
Cancel any time. Your books, manuscripts and notes stay on your computer, and they're yours to keep.
No. If you have one, add it and start writing. If you don't, the Blueprint Assistant builds one with you from your genre, tropes and a story idea you choose.
Yes. Plan every book in the series at once, with a series bible covering the world, its lore and what happens in each book. Each book then appears in your library, ready to write.
It's the same kind of AI doing the writing, minus the manual work. Payperback Writer runs the planning, drafting, review and editing for every chapter, keeps the whole book in view at every step, and keeps going while you're away.
Not directly. Those subscriptions cover the chat apps, while Payperback Writer uses the AI company's pay-as-you-go developer account, which is free to open. Claude Max, Ultra and Team include monthly API credits that can pay for much of your writing.
It writes to your writing guide and any style notes you add, so the sharper your guide, the closer it gets. Treat the result as a strong, revised draft, and give it a final pass of your own.
Yes, and the EPUB is ready for the ebook stores. Check each store's rules: Amazon KDP, for example, asks you to disclose AI-generated content when you publish.
Payperback Writer pauses, tells you, and carries on where it left off as soon as you top up.
Yes. Add your finished manuscripts and it reads them, finds the author and series on the title page, and adds their characters to your list. Reading a book this way usually costs well under a dollar.
Send a message and you'll get a reply by email. Already using Payperback Writer? You can also send a message from inside the app: Settings, then Help & support.
Bring your plan, or bring an idea. Either way, you finish with a book.
Subscribe for $25/monthWorks with Claude, ChatGPT, Gemini, DeepSeek and more · Windows and Mac
Effective November 6, 2026
These Terms of Service (the “Terms”) are an agreement between you and Payperback Writer (“we,” “us” or “our”). By buying a subscription, or by downloading, installing or using Payperback Writer (the “Software”) or this website, you agree to these Terms. If you don’t agree, don’t use the Software.
Payperback Writer is desktop software for Windows and Mac that helps authors draft, review and edit books using third-party artificial intelligence (“AI”) services. The Software runs on your own computer and connects to AI services using an account and key that you provide. We don’t operate any AI service, and we don’t receive, store or see your books, notes or AI keys.
You must be at least 18 years old, or the age of majority where you live, and able to form a binding contract. If you use the Software for a business, you confirm you’re authorized to accept these Terms on its behalf.
While your subscription is active and you follow these Terms, we grant you a limited, personal, non-exclusive, non-transferable, revocable license to install and use the Software on up to three (3) computers that you own or control. You may not:
The Software is licensed, not sold. We (and our licensors) keep all rights, title and interest in the Software, the Payperback Writer name and logo, and this website, except for the license above.
Subscriptions are sold through our reseller and Merchant of Record, Lemon Squeezy, which processes your payment, handles applicable sales taxes and issues your receipts. Lemon Squeezy’s own terms and privacy policy also apply to your purchase.
To write with the Software, you must have your own account with a supported AI provider, such as Anthropic (Claude), OpenAI (ChatGPT), Google (Gemini), DeepSeek or OpenRouter. You agree that:
Payperback Writer is not affiliated with, endorsed by or sponsored by Anthropic, OpenAI, Google, DeepSeek, OpenRouter or any other AI provider. Their names and trademarks belong to their respective owners and are used only to describe compatibility.
Your content stays yours. As between you and us, you own everything you put into the Software (such as outlines, writing guides, notes and manuscripts) and, to the extent the law and your AI provider’s terms allow, the text it produces for you. We claim no ownership of your books.
You understand and agree that:
You agree not to use the Software or this website to:
The Software may check for updates and offer to install them. Updates may add, change or remove features. We may stop supporting older versions, and some features may stop working if third-party services change. We have no obligation to provide any particular update or feature.
Your books are stored on your own computer, and you are responsible for backing them up. We aren’t responsible for lost or corrupted files, including losses caused by the Software, your computer, AI services or anything else.
If you send us suggestions or feedback, you allow us to use them freely and without any obligation to you.
THE SOFTWARE AND THIS WEBSITE ARE PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT AND ACCURACY. WE DON’T WARRANT THAT THE SOFTWARE WILL BE UNINTERRUPTED, ERROR-FREE OR SECURE, THAT IT WILL WORK WITH ANY PARTICULAR AI SERVICE, OR THAT ANY BOOK OR RESULT WILL MEET YOUR EXPECTATIONS OR ACHIEVE ANY COMMERCIAL SUCCESS. Some places don’t allow certain warranty exclusions, so some of these may not apply to you.
TO THE FULLEST EXTENT PERMITTED BY LAW, WE WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, ROYALTIES, DATA, CONTENT OR GOODWILL, OR FOR ANY CHARGES FROM AI PROVIDERS, ARISING FROM OR RELATED TO THE SOFTWARE, THIS WEBSITE OR THESE TERMS, EVEN IF WE HAVE BEEN TOLD THEY ARE POSSIBLE. OUR TOTAL LIABILITY FOR ALL CLAIMS RELATED TO THE SOFTWARE, THIS WEBSITE OR THESE TERMS IS LIMITED TO THE GREATER OF (A) THE AMOUNT YOU PAID US FOR THE SOFTWARE IN THE 12 MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM, OR (B) FIFTY U.S. DOLLARS (US$50). These limits apply to every type of claim, including contract, negligence and other legal theories. Some places don’t allow certain limitations, so some of these may not apply to you.
You agree to defend, indemnify and hold harmless Payperback Writer from any claims, losses, damages, liabilities, costs and expenses (including reasonable attorneys’ fees) arising from your use of the Software, the content you create or publish with it, your AI accounts and charges, or your breach of these Terms or of any law or third party’s rights.
We may suspend or end your license if you break these Terms, including by sharing your license key. You may stop using the Software at any time. Sections 4 (as to amounts owed and refunds), 5, 6, 9 to 13, and 15 to 17 survive termination.
We may update these Terms from time to time. We’ll post the new version on this page with a new effective date, and for material changes we’ll make reasonable efforts to notify you (for example, by email or in the Software). If you keep using the Software after changes take effect, you accept the updated Terms.
These Terms are governed by the laws of the State of South Carolina and applicable U.S. federal law, without regard to conflict-of-law rules. Before filing any claim, you agree to contact us first at mboyd1978@gmail.com and try in good faith to resolve the dispute informally for at least 30 days. Any claim that isn’t resolved informally must be brought only in the state courts located in Dorchester County, South Carolina, or the United States District Court for the District of South Carolina, and you and we consent to their jurisdiction, except that either of us may bring an eligible claim in small claims court. To the extent permitted by law, claims must be brought individually, not as a plaintiff or class member in any class or representative proceeding.
These Terms, together with any terms presented at checkout, are the entire agreement between you and us about the Software. If any part is found unenforceable, the rest stays in effect. Our failure to enforce a provision isn’t a waiver. You may not transfer these Terms without our written consent; we may transfer them in connection with a sale or reorganization of the business. You agree to comply with all applicable export control and sanctions laws.
Questions about these Terms? Use the contact form on this page, or email mboyd1978@gmail.com.
Effective November 6, 2026
This Privacy Policy explains what information Payperback Writer (“we,” “us” or “our”) collects about you through the Payperback Writer software (the “Software”) and this website, and how it’s used. The short version: your books, notes and AI keys stay on your computer, and we never see them.
When you write, the Software sends the text needed for each step (such as your outline, notes and chapters) directly from your computer to the AI provider you choose, using your own account. It doesn’t pass through us. Your provider’s privacy policy and terms govern how they handle it, so we encourage you to read them: Anthropic, OpenAI, Google, DeepSeek and OpenRouter each publish their own.
We use the information above only to sell and license the Software, provide updates, answer support requests, prevent fraud and license abuse, keep records required by law, and tell you about important changes (such as price or policy changes). We don’t sell your personal information, share it for advertising, or use it to train AI models.
We share information only with service providers that help us run Payperback Writer (Lemon Squeezy, Netlify, Dropbox and our email provider), when required by law or to protect our rights, or with a successor if the business is sold or reorganized. These providers handle information under their own privacy policies.
We keep purchase and license records for as long as needed to provide the Software and meet legal, tax and accounting obligations. Support messages are kept for as long as useful to help you, and you can ask us to delete them.
We use reasonable measures to protect the information we hold, but no method of transmission or storage is completely secure. Because your books and keys stay on your computer, keeping that computer secure (and backing up your work) is important.
You can ask us to access, correct or delete the personal information we hold about you by emailing mboyd1978@gmail.com. Depending on where you live, you may have additional rights under laws such as the GDPR (in the European Economic Area and United Kingdom) or U.S. state privacy laws, and we’ll honor requests as those laws require. You can cancel your subscription at any time.
We are based in the United States, and the services we use may process information in the United States and other countries. By using the Software, you understand your information may be processed outside your country.
Payperback Writer is not intended for anyone under 18, and we don’t knowingly collect information from children. If you believe a child has given us information, contact us and we’ll delete it.
We may update this policy from time to time. We’ll post the new version on this page with a new effective date, and notify you of material changes.
Questions about privacy? Use the contact form on this page, or email mboyd1978@gmail.com.