Writing Twin vs Grammarly

Grammarly fixes grammar.
Writing Twin fixes voice.

If you use AI to draft messages, Grammarly won't help them sound like you. Writing Twin rewrites AI output in your specific voice — right inside Gmail, Outlook, LinkedIn, and Slack.

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?

Not just another AI writer.

The only tool that rewrites AI output in your specific voice.

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

Use both — or just use the one that matters most to you.

Grammarly catches typos. Writing Twin makes everything you write sound like a fluent, confident version of yourself. They solve different problems — but if you already sound grammatically correct and still sound like ChatGPT, you need Writing Twin.

Send your next message in your own voice.

Free to start. No credit card. Works in Gmail, Outlook, LinkedIn, and Slack.