Sound like yourself in English —
not like AI.
Writing Twin learns your voice and rewrites stiff, AI-sounding drafts into natural, professional messages that are unmistakably you — right inside Gmail, Outlook, LinkedIn, and Slack.
To: sarah@acme.com
Subject: Re: Q3 Proposal
Just wanted to circle back on the proposal. I think there are some synergies we could leverage to maximize our value proposition going forward.
Before: AI draft → After: Your voice
See the difference one click makes.
Toggle between examples to see Writing Twin in action.
Before
I wanted to circle back on the proposal we discussed in our previous meeting. I believe there are significant synergies we should leverage to maximize our mutual value proposition going forward.
After ✦
Hey — following up on the proposal. There's real overlap here and I think it's worth a proper call. Free for 30 minutes this week?
Your voice, in three steps.
No complex setup. No writing prompts. Just your voice.
Add to Chrome
Install Writing Twin from the Chrome Web Store in one click. No account required to start.
Train your Writing DNA
Paste 3–5 emails or messages you've written. Our 6-dimension engine extracts your tone, rhythm, vocabulary, formality gradient, signature patterns, and context style.
One click rewrites in your voice
Open Gmail, hit the Writing Twin button. It auto-detects your recipient and subject, picks the right tone, and rewrites in your exact voice — instantly.
6 Writing Dimensions Captured
See Your Writing DNA
Paste anything you've written. Get your style fingerprint in seconds.
Your words stay yours.
Built for professionals who need discretion.
Your data is never sold
We do not sell, rent, or share your writing with advertisers or third parties. Your words are yours.
Messages processed, not stored
Your text is sent to our AI to rewrite it and is not stored after the request completes. We do not build datasets from your messages.
Delete your data anytime
Email support@writingtwinai.com and we will permanently delete your voice profile and all stored data within 48 hours.
English isn't your first language.
Your ideas are still world-class.
Writing Twin makes sure they read that way — confident, professional, and still unmistakably you.
Not just another AI writer.
The only tool that rewrites AI output in your specific voice.
| Feature | Grammarly | Jasper AI | Writing Twin ✦ |
|---|---|---|---|
| Fixes grammar and spelling | ✓ | – | ✓ |
| Writes in your personal voice | – | – | ✓ |
| Works inside Gmail / Outlook | ✓ | – | ✓ |
| Works inside LinkedIn / Slack | ✓ | – | ✓ |
| Learns from your own writing | – | – | ✓ |
| One-click rewrite | – | – | ✓ |
| Doesn't sound like AI after rewriting | – | – | ✓ |
Grammarly
- ✓Fixes grammar and spelling
- –Writes in your personal voice
- ✓Works inside Gmail / Outlook
- ✓Works inside LinkedIn / Slack
- –Learns from your own writing
- –One-click rewrite
- –Doesn't sound like AI after rewriting
Jasper AI
- –Fixes grammar and spelling
- –Writes in your personal voice
- –Works inside Gmail / Outlook
- –Works inside LinkedIn / Slack
- –Learns from your own writing
- –One-click rewrite
- –Doesn't sound like AI after rewriting
Writing Twin ✦
- ✓Fixes grammar and spelling
- ✓Writes in your personal voice
- ✓Works inside Gmail / Outlook
- ✓Works inside LinkedIn / Slack
- ✓Learns from your own writing
- ✓One-click rewrite
- ✓Doesn't sound like AI after rewriting
Be one of the first.
Writing Twin is in early access. The people who join now get founding-member pricing locked forever, direct access to the founder, and the chance to shape what gets built next.
Gmail · Outlook · LinkedIn · Slack
Works in
< 60 sec
To your first rewrite
Manifest V3
Chrome standard
“My emails finally sound like something I'd actually write.”
Early access member · Product Manager
First reviews coming soon — we ship this week.
Why I built this
I'm an engineer from India, living and working in South Korea. English is my professional language — I use it every day for emails, messages, and client communication. When AI writing tools arrived I thought they'd finally make it effortless. Instead every draft came back sounding like the same robot. Formal, hollow, nobody's voice. I built Writing Twin because I wanted something that learned how I actually write — not what AI thinks professional English should sound like.
Writing Twin is the only tool that starts with your voice — not a generic template of what professional English is supposed to sound like.
Founder, Writing Twin AI
Start free. Upgrade for $5/mo as a founding member.
300 rewrites per month. Lock in this price forever — it goes up when we exit beta.
Free plan: 20 rewrites/month, no card needed.
Frequently asked questions
Send your next message in your own voice.
Free to start. No credit card. Works in Gmail, Outlook, LinkedIn, and Slack.