GnarlyKey
Download

For Windows and Mac · Korean & English

Rough draft in.
Polished email out.

Select what you wrote in Outlook, Gmail, Slack, KakaoTalk or any other app, press one hotkey, and GnarlyKey rewrites it on the spot: friendly, firm, or simply professional.

Download free See what it does

5 free rewrites every day. No subscription.

New message
To
Subject

What happens when you press the hotkey

GnarlyKey works inside the app you're already using. Nothing to copy, nothing to paste.

  1. 1

    Select your text

    Highlight a sentence, a paragraph or a whole email, in any app where you type.

  2. 2

    Press a tone hotkey

    The GnarlyKey icon turns orange while it writes. It usually takes 1 to 3 seconds.

  3. 3

    Your text is replaced

    The rewritten version appears right where your draft was, ready to send. Your clipboard is left as it was.

  4. 4

    Not quite right? Undo.

    Press Ctrl Z (⌘ Z on Mac) to get your original back, or try another tone.

Korean or English, detected for you

Write in either language. GnarlyKey answers in the same one, with proper 존댓말 in Korean and natural business English.

Your facts stay put

Names, amounts, dates, links and product names come back exactly as you wrote them. It changes how you say it, not what you say.

Works where you write

Outlook, Gmail, Slack, Teams, KakaoTalk, Word, Notion, your browser: if you can select text, it works. Even in 한글 input mode.

Always one keystroke away

GnarlyKey sits quietly in your system tray (menu bar on Mac) and starts when you sign in to your computer.

Three tones, three hotkeys

F

Friendly

Warm and approachable, still professional. For colleagues and partners you get along with.

H

Firm

Polite, but they'll know you're not happy. For missed deadlines and repeated issues, without burning bridges.

K

Professional

Clear, neutral and courteous. The everyday choice for clients, partners and your boss.

You can change any of these hotkeys in Settings.

Set up in two minutes

  1. Install from the Microsoft Store

    Open GnarlyKey once. A short welcome notification shows that it's running.

  2. Find the icon in your tray

    It's the round blue icon at the bottom right of the taskbar. If you don't see it, click the ^ arrow. Drag it onto the taskbar to keep it visible.

  3. Sign in

    Click the icon, choose Settings…, open the Account tab and click Sign in. Your browser opens; create an account or sign in, then come back.

  4. Try it

    Select some text you wrote and press Ctrl + Alt + K.

Change a hotkey

Settings › Hotkeys: click the shortcut, press the new combination (two modifier keys plus a letter or number), then Save. It works right away.

Credits and account

Settings › Account shows your free rewrites left today and your credits, and lets you buy more.

Language and start-up

Settings › General: choose 한국어 or English for the app, and whether GnarlyKey starts when you sign in.

Reading the icon

  • Ready
  • Rewriting
  • Something went wrong; a notification says what

Simple pricing

Every account gets 5 free rewrites a day (up to 500 characters each). Need more? Buy credits once and use them whenever you like. No subscription, and credits never expire.

Free

$0

5 emails of 500 characters, every day

1,200 credits

$5

1,200 emails of 500 characters

Most popular

3,400 credits

$12

3,400 emails of 500 characters

7,550 credits

$25

7,550 emails of 500 characters

A rewrite uses 1 credit for every 500 characters (a 1,200-character email uses 3), and free rewrites count the same way. You're never charged for a rewrite that fails. All purchases are final: credits are added right after payment and can't be refunded, so try the free credits first (refund policy). Prices in US dollars; taxes may apply. Payments are handled securely by Paddle.

Your emails stay yours

GnarlyKey only reads the text you select, and only when you press a hotkey.

  • Your text isn't stored after it's rewritten, unless you choose to share it to help us improve.
  • The AI services we use don't train on your text.
  • Delete your account and all data any time, in Settings › Account.

Questions

Does it keep running after I close the window?

Yes. Closing the Settings window doesn't stop GnarlyKey; it keeps working from the tray (menu bar on Mac). To stop it, click the icon and choose Quit.

Nothing happens when I press the hotkey.

Make sure some text is selected first, and that you're signed in (Settings › Account). On Mac, check that GnarlyKey is allowed under Accessibility and Input Monitoring. If another program uses the same shortcut, pick a different one in Settings › Hotkeys.

Can I undo a rewrite?

Yes: press Ctrl + Z (⌘ + Z on Mac) in the app you're writing in, just like undoing a paste.

Does it work when my keyboard is in 한글 mode?

Yes. The hotkeys work in both 한글 and English input modes.

What counts as a credit?

Every 500 characters of text you rewrite uses 1 credit, so a short message is 1 credit and a 1,200-character email is 3. Your 5 free credits are used first each day, then your purchased credits. GnarlyKey lets you know when your free rewrites or credits are running low.

Can I get a refund?

No. Credits are digital content added to your account right after payment, so purchases are final. That's why you get free credits every day to try GnarlyKey first. If you were charged twice or your credits never arrived, email us and we'll fix it. See the refund policy.

Which languages are supported?

Korean and English. Mixed text works too: English product names in a Korean email stay as they are.

Get GnarlyKey

Free to download. 5 free rewrites every day.

Get it from the Microsoft Store Download for Mac

Windows 10 or 11 · macOS 11 or later. Mac with an Intel chip?