Launching today
Prosed
Go from newsletters & podcasts to published manuscript
123 followers
Go from newsletters & podcasts to published manuscript
123 followers
You've spent years creating—newsletters, podcasts, LinkedIn posts, courses. The book is in there. You just haven't had time to assemble it. Prosed's Inkwell pipeline analyzes your voice, structures your scattered content into chapters, and produces a manuscript that actually sounds like you. Not generic AI writing or slop. Your words, your ideas, assembled into something real. Built-in editorial review. Print-ready PDF/DOCX export. Beta: $47 for the first 100 founders.
Prosed
codebender
@rails Nice! I never thought of writing a book myself before, but between my blog posts, workshops, patents, and publications, this is very intriguing! Especially if it can do it in my voice.
Prosed
@tzikis thanks for the kind words! Between blog posts, workshops, patents, and publications, you've got more than enough for a book. Most creators do. They just never had time to sit down and connect the dots, or how I like to say, give it a spine!
That's exactly what Prosed does. And yes, voice is the whole point. Prosed analyzes your existing writing to capture how you actually sound. The result reads like you wrote it, because it's built from your actual content. If you want to try it: tryprosed.com 💥
Would love to see what comes out of your material!
codebender
@rails nice! i think i'll give it a try
@rails @tzikis following 👀
@rails It sounds promising. I'm curious: I have social posts and podcast appearances. How much content would you need to get a solid output from your perspective?
Product Hunt
Prosed
@curiouskitty great questions, honestly, ones we thought about a lot and put time into avoiding failures and keeping quality high!
Best inputs:
1 Long-form newsletters and essays win by a mile. Already written, already structured, already sounds like you. Inkwell has the most to work with there.
2 Course content is a surprisingly close second. Lessons already have a logical flow baked in.
3 Podcast transcripts are strong on voice but messier. Works well, just needs more editing and possibly more iterations of the first draft. Solo episodes are best >> where the creator is doing most of the talking, rather than multiple guests. Same for other types of video.
4 LinkedIn posts and social threads are great for voice fingerprinting and filling gaps, but hard to build a full book from those alone. Too fragmented on their own.
Sweet spot is someone with 30-50+ pieces of long-form content around a consistent theme.
Where it breaks:
Topic sprawl. If you write about productivity one week and crypto the next and parenting the next, that's where it gets harder, and the post's first draft back and forth becomes important. We can't manufacture coherence that doesn't exist.
How we handle it:
The questionnaire at the start is more important than users think. It asks about content type, volume, themes, and where they upload the content. If someone has less content, we adjust the scope. Shorter book, tighter focus.
The assembly-block framing is very real. The risk I’d watch is that “sounds like you” can mean two different things: surface tone, or preserving the actual judgment behind the old essays/posts/podcast moments.
For a book workflow, I’d love a source-to-chapter map: which passages came from the creator’s original material, which connective tissue Prosed added, and where the author marked “not me” or “not my point.” That would make the manuscript feel less like an AI rewrite and more like an editable spine for the body of work they already built.
Prosed
@jim_jeffers one of the best comments/feedback we've gotten today.
You nailed it. "Sounds like you" has layers. Surface tone is the easier part (vocabulary, sentence patterns, rhythm). The harder part is preserving the actual judgment behind someone's writing. What they were arguing, not just how they said it.
That's where Inkwell spends most of its time. What you argue and how you build your points. When we score chapters on our D1-D10 dimensions, faithfulness to source reasoning is a big chunk of what we're looking at.
The source-to-chapter map is a great idea! 💡 We don't have that today, but creators review every chapter and can flag anything that feels off inside the portal once the first draft is assembled. It's back and forth, not a one-shot "here's your book." But a visual map showing "this paragraph came from newsletter #14, this is connective tissue we added" would be really useful. Going on the roadmap for sure!
Love the "editable spine" framing btw. That's exactly what we're building! 🚀
@Prosed reminds me this thread @naval posted on Twitter/X in 2018 on how to get rich:
No more excuses. Thank you, @rails!
Prosed
@naval @fmerian Ha, that's a great one! Yeah, I'm a writer, and I personally struggled to take on the assembly effort a book demands. I have so many essays sitting in my G drive, and I'm finally giving them a spine!
Can't wait to watch what people write ✍️
hey elise! great product but also want to add i love your design style. this is def the underrated long game for makers! how do you tighten the voice without flattening the personality? good luck with your launch :)
Prosed
@hiyamojoThank you! Design took some effort so that means a lot.
On voice, we don't actually write anything. We assemble the creator's existing content into a book structure, with some connective tissue to make it all flow. So the personality is already there because it's their words, their ideas, their arguments.
Inkwell analyzes their content before starting. Not just vocabulary and tone, but sentence rhythm, how they build their points, even what kind of humor they use. The more content we have, the sharper the result.
What we remove is the stuff that doesn't belong in a book (filler, repetition, off-topic detours).
Thanks for the kind words and for stopping by!
Is it tailored to a specific genre like, for example, an autobiography? Or can I write sci-fi with it if I want?
Prosed
@haldavaroman Right now it's built for non-fiction. Think creators who already have a lot of content out there (newsletters, podcasts, courses, guides), and want to assemble that into a book. We just give that content a spine, makes sense?
Sci-fi is a different beast. We'd need to generate original plot, characters, world-building from scratch, and that's not what Prosed does. We assemble your existing content into a book, we don't invent new stuff. So if you have a backlog of short stories or world-building notes, maybe. But if you're starting from zero, that's not our lane today!
Do you have sci-fi notes, or stories?
Rizzle AI
What’s the most unexpected use case you discovered?
Prosed
@nithin_raju1 Most unexpected use case so far: someone wanted to turn a dieting/health protocol into a book to send to clients. Women with chronic health conditions who needed a physical guide (not just the digital guides their teams have built/offered so far). Didn't see that coming, but it makes total sense. Strong voice, lots of existing content and guides, just wanted a deeper book structure to get to the shelf of their customers.