Write copy that converts,
anywhere you type.
KobyCopy is a tiny desktop app that rewrites your text for clarity, persuasion, and conversion, right inside whatever app you're already using. Ads, emails, landing pages, social posts. Select text, hit a shortcut, ship better copy in seconds.
Our new tool helps people write better marketing stuff using AI.
Our AI rewrites your marketing copy so it actually converts.
Works inside the apps you already write in
From average to effective in three steps
No tab switching. No pasting into a chatbot. No breaking your flow.
Select your text
Highlight any sentence or paragraph in any app. Koby notices instantly.
Pick a copy goal
Stronger hook, clearer benefit, less hype, higher trust, more direct response. Eleven copy lenses, not just "fix grammar."
Replace in one click
Your text is swapped in place. You stay in flow. You ship better copy.
Built for persuasion, not correction
Grammarly fixes your commas. KobyCopy makes your copy convert.
Rewrite Anywhere
Works in every desktop app. A global hotkey or text selection is all you need. No browser extension required.
11 Copywriting Modes
Stronger Hook, Clearer Benefit, More Curiosity, More Urgency, More Specific, Less Hype, Higher Trust, More Emotional, Direct Response, Simpler Language, plus a general rewrite.
Brand Voice Memory
Save how your brand sounds. Every rewrite stays on-voice, not generic.
29 Channel Presets
Facebook and Google ads, landing headlines, email subject lines, cold outreach, LinkedIn posts, product pages, SMS, and more. Each one tuned for where it'll run.
Privacy-First
Bring your own Claude or OpenAI key, or run the bundled offline model. Your copy never touches our servers.
Custom Quick Actions
Build your own one-click prompts. Add, edit, reorder, and rename them so the bubble matches your workflow.
Named after a very good dog.
Every product is built by someone. KobyCopy was built by a founder who writes a lot of marketing copy, gets a lot of muddled first drafts, and has a dog named Koby who is very patient while it all gets figured out. We think software should feel a little warmer. A little friendlier. A little more like having a smart friend in the room.
"Good boy. Good copy."
One simple plan. Big early bird discount.
Every feature included. Cancel anytime. Early bird pricing is locked in for as long as you stay subscribed.
KobyCopy Pro
Everything you need to write copy that converts
Normally $5/mo. Save 40% as an early bird.
Normally $50/yr. Save 60% as an early bird.
- Unlimited rewrites, in every desktop app
- 11 copywriting modes (Stronger Hook, Clearer Benefit, Direct Response, and more)
- 28 channel presets for ads, email, landing pages, social, and more
- Unlimited brand voice profiles
- Customizable Quick Action prompts
- Bring your own Claude or OpenAI key, or run the bundled local model offline (no API key needed)
- Priority support
A full week, free. No credit card required. Cancel anytime.
Get KobyCopy on your machine
Free for a full week. No credit card required. You'll know in 5 minutes if it's for you.
Common questions
How is KobyCopy different from Grammarly?
Grammarly fixes correctness: grammar, spelling, tone smoothing. KobyCopy rewrites for outcomes: hooks that stop the scroll, benefits that land, CTAs that get clicked. Different job entirely.
How does the free trial work?
You get a full week to use every feature, free. No credit card required to start. Most people know within the first few rewrites whether KobyCopy is for them. If you love it, upgrade to Pro from inside the app. If not, it simply stops working after day 7.
Which apps does it work in?
Every desktop app that accepts text input. Gmail, Docs, Notion, Slack, Figma, Webflow, Meta Ads Manager, LinkedIn, X, Sheets, your notes app. If you can type into it, KobyCopy can rewrite it.
Do you train on my copy?
No, and your copy never touches our servers. KobyCopy talks directly to whichever AI provider you choose: Claude or OpenAI with your own API key, or the bundled local model that runs fully offline on your machine. We don't proxy or store your text.
What's the early bird deal?
Until May 31, 2026, KobyCopy Pro is $3/month (normally $5) or $20/year (normally $50). If you subscribe during the early bird window, your discounted price is locked in for as long as you stay subscribed.
Who is Koby?
Koby is the founder's dog. He has nothing to do with the software engineering but is very supportive. 🐾
Ready to write copy that converts?
Install KobyCopy in under a minute. Try it free for a full week. Your next draft will thank you.
Start your 7-day free trial