The AI rewriter for Mac that works where you write
Select a sentence or paragraph in any app, press one shortcut and choose Polish. NativePen rewrites it to read clearer, more formal, more casual or more concise, then pastes the new version over the old one.
Free 50 credits · No subscription required
Rewrite text without leaving your app
Most AI rewriters live in a browser tab. You copy your text, paste it into a box, pick a mode, copy the result and paste it back. NativePen removes those steps. It runs from the macOS menu bar, works on whatever text you select, and returns the rewrite to the same spot, so you stay in the email, chat or document you were writing.
Pick a tone
Rewrite in a formal, casual or concise tone. Use formal for a client email, casual for a team chat, and concise when a paragraph runs too long.
Fix errors in the same pass
Each rewrite also corrects grammar, spelling and punctuation, so the new version is ready to send.
Keep your content
Polish works on wording and flow. Your names, numbers and links should come back as you wrote them, and you can review the result before you send it.
Works in every app
Mail, Slack, Notion, Chrome, VS Code, Pages and any other app where you can select text.
Rewrite in another language
Use Translate on the same selection to turn it into one of 30+ languages. Formatting such as line breaks and lists stays intact.
One credit per rewrite
Each rewrite of up to 4,000 characters costs one credit. New accounts start with 50 free credits.
Rewrite a paragraph in three steps
No browser tab and no copy and paste.
Select the text
Highlight the sentence or paragraph you want to change, in any Mac app.
Press the shortcut and choose Polish
Pick the tone you want: formal, casual or concise.
Use the new version
NativePen pastes the rewrite over your selection, or shows it in a popover so you can copy it.
When an AI rewriter helps
A rewriter helps most when you know what you want to say but the sentence does not sound right yet.
Emails that sound too blunt
Turn a short, direct reply into one that reads polite and professional without adding filler.
Long Slack messages
Cut a long explanation down to a few clear lines before you post it in a channel.
Docs and proposals
Make a dense paragraph in Notion or Pages easier to read, or shorten a summary to fit a slide.
Writing in your second language
Write the sentence the way you can, then let NativePen rewrite it into fluent English.
Frequently asked questions
Rewrite text in any Mac app
Create an account and get 50 free credits. No subscription required.