Hey Product Hunt!

I built MyWritingTwin to solve a problem that's been bugging me since I started using AI for writing: every tool produces the same style.

You ask ChatGPT to "match your tone" and get corporate oatmeal. You try Claude's style settings and get something close but never quite right.

The root cause is what I call the Median User Problem. RLHF training optimizes AI for the average user, which means it actively erases the quirks that make your writing yours: your sentence rhythm, your punctuation habits, the way you structure arguments.

MyWritingTwin uses computational stylometry: the same methodology forensic linguists use to identify anonymous authors — to capture 50+ dimensions of your writing style. The output is a Style Profile (a Master Prompt) that works across ChatGPT, Claude, Gemini, and any LLM. Not a template. A detailed linguistic blueprint of how you actually write.

Think of it like a writing stylist who studies your work, then sits beside every AI you use.

There's a free Writing DNA Snapshot if you want to see what the analysis looks like before buying.

The meta-story: this entire product, every line of code, 160+ blog posts in 4 languages, payment system, analytics, email sequences was built by one person directing AI agents from the terminal.

Full story: https://mywritingtwin.com/the-bigger-picture.html

All the behind-the-scenes posts about how it was built: https://mywritingtwin.com/building

🎁 Product Hunt exclusive: use PRODUCTHUNT at checkout for 20% off — valid until Feb 28.

Ask me anything about the linguistics, the tech, or the build process!