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Free AI humanizer

Make AI writing sound like you.

Claude studies your own emails and posts, learns how you write, and builds you a personal humanizer. Paste in any draft and it comes back in your voice, with a score that shows how close it got. The more of your real writing you give it, the more it sounds like you. It's free, it runs in your own Claude account, and we made it in Lake Charles, Louisiana.

Get the humanizer

We'll email you the file and the three setup steps. It's free, and it's yours to keep.

It comes from nick@redwaterrev.com. You'll also get our newsletter on using AI in a local business. Every one of those emails has a one-click unsubscribe. See our privacy policy.

Setup

Three steps. Claude does the rest.

Step 1

Download Claude

Get the Claude app for your computer at claude.ai/download, or use claude.ai in your browser. A free account works.

Step 2

Add the file

In Claude, open Customize, then Skills. Click +, choose Upload a skill, and pick the zip we emailed you. Don't unzip it first.

Step 3

Ask Claude to set it up

Start a new chat and type Set up my humanizer. Claude walks you through the rest, one question at a time.

What happens next

An hour or two with Claude, and it knows how you write.

Before and after

Same reply, same facts. Different voice.

A customer asks why our audit costs more than a cheaper option online. Here's the reply a generic AI writes, then the same reply after the humanizer, both scored against Nick's own writing.

Generic AIScore 6.3 · sounds like Nick: 0%
Hi Sarah, Thank you so much for reaching out! I completely understand your concern about pricing. While there are certainly less expensive options available, our audit is designed to provide comprehensive, tailored insights that deliver real value for your business. Our process includes a one-hour walkthrough and a detailed written roadmap, ensuring you have a clear path forward. I'd love to set up a quick 15-minute call this week to answer any questions you may have. Best regards, Nick
After the humanizerScore 0.8 · sounds like Nick: 87%
Hey Sarah, Fair question. You can find cheaper options online, and some of them are fine. Ours costs more because I sit down with you for an hour, walk through how your business actually runs, and then you get a written roadmap of what to fix first. If it helps, let's do a quick 15-minute call this week and I'll show you what that looks like. No pressure either way. Take care and God bless, -Nick

Scored with this free humanizer, set up on about 77,000 words of Nick's own posts and comments. Lower is closer: his own writing scores about 1.0, and generic AI scores 3 to 6 depending on length.

How it works

It measures your writing, not just the words.

A lot of AI humanizers just swap words so the text gets past a detector. This one learns you. It takes about 20 measurements of your writing, like how long your sentences run, how often you use commas, exclamation points and contractions, how you start a sentence, and which small words you lean on. Then it learns which of those set your writing apart from typical AI writing.

Every rewrite gets a score. Your own writing scores about 1.0, and generic AI usually lands between 2 and 6. The more of your writing it learns from, the further away AI lands. Claude writes a few versions, keeps the one that's closest to you, and checks that no number, name, price or link changed along the way. We use the same method on our own posts and client emails.

Who it's for

Owners who write their own emails and posts.

We're two brothers in Lake Charles who build AI tools for local businesses. We made this for owners around here who answer customers at night, post on Facebook between jobs, and don't want any of it to sound like a robot wrote it. That covers contractors, tree services, salons, realtors, insurance agents and shops in Lake Charles, Sulphur, Moss Bluff, Westlake and Lafayette. It works the same anywhere else.

There's more free software on our free resources page. If you want to see what we build for paying clients, look through our work.

Before you start

What it won't do.

Questions

Common questions.

Is it really free?

Yes. No card and no trial. You get the files under the MIT license and they're yours to keep and change.

Do I need to know how to code?

No. You upload one file and answer Claude's questions. Claude runs everything behind the scenes.

What do I need to get started?

A computer, a Claude account, an hour or two, and a lot of your own writing, like sent emails, posts and newsletters. If Claude asks, turn on code execution under Settings, then Capabilities.

How much writing does it need?

At least 10,000 words of your own writing, and more is better. That's roughly 60 to 80 sent emails plus your posts. Our own humanizer runs on tens of thousands of words. It won't build under 5,000, because there isn't enough there to learn a voice.

Where does my writing go?

It stays in your Claude account, in the setup chat and in the personal humanizer you save. Nothing comes to us. The scoring runs inside Claude and doesn't call any other service.

My computer unzipped the file. What now?

Some browsers unzip downloads on their own. Upload the original zip if you still have it. If not, right-click the folder and choose Compress (on a Mac) or Send to, then Compressed folder (on Windows), and upload that.

Does it work with ChatGPT?

It's built as a Claude skill, so the setup is written for Claude. The scoring tool is plain Python, so a developer could run it elsewhere.

Can Redwater set this up for my team?

Yes. We're based in Lake Charles and build AI tools like this into local businesses, including your email and CRM. Book an AI audit and we'll tell you honestly whether it's worth it for you.

Want AI that writes like you inside your business?

Start with an AI audit. We'll map where AI can take writing and admin work off your plate.

Book your AI audit →