Fix grammar
Spelling, agreement, punctuation. Correct text comes back untouched.
me and him has went their
He and I have gone there
Thanks for the notes. we was hoping to circle back on this and leverage our learnings before friday, then ship.
Intelligent AI. Without Wi-Fi.
Download for macOSSetup
Three steps, once. Breaking Pen lives in the menu bar and waits.
Open Breaking Pen
Drag it to Applications and open it. It appears in the menu bar and nowhere else. No Dock icon, no window to keep.
Allow it to read the selection
One switch in System Settings ▸ Accessibility. That is how Breaking Pen reads what you selected and writes the result back, in any app.

Let the model download
About 1 GB, once. After that Breaking Pen needs no connection at all, and no account, ever.
From then on: select text, press ⌃⌥N
The palette opens at your cursor. Fix grammar and De-slop also have keys of their own.
The actions
Each one has a single job and keeps every fact, name, and number as you wrote it.
Fix grammar
Spelling, agreement, punctuation. Correct text comes back untouched.
me and him has went their
He and I have gone there
De-slop
Cuts the reaching out, the circling back, the leveraging. Plain words, shorter.
Just circling back to leverage our synergies
Following up on our plan
Change the tone
Friendly, professional, or casual. Same points, different register.
need this by 5 no excuses
Could you send this by 5? Thanks.
Make it concise
Half the words, all the meaning.
I was wondering if maybe we could possibly meet
Can we meet?
Translate
Fourteen languages, in place. Think in one, send in another.
See you tomorrow at nine.
Hasta mañana a las nueve.
Email or post
Rough notes into a clean email, or a thought into a post.
launch tues, need review by fri
Hi team, we launch Tuesday. Please review by Friday.
Your own instruction
Type one once, such as “turn this into three bullet points”, and save it. It gets a letter and a place in the palette.
Ship Monday, test Friday, write docs
• Ship Monday • Test Friday • Write docs
Works wherever you can select text: Mail, Slack, Chrome, Notion, Safari, X, Messages, Xcode, and the rest.
Private, and fast
In the cloud: nothing.No account, no sign-in, no telemetry of your writing. Breaking Pen works with the Wi-Fi off.
M2 Pro, Standard model, a sentence or a paragraph. The first action after launch takes a few seconds while the model loads.
Pricing
No subscription. One license, five Macs, every update.
$19.99$49.99
One-time purchase. Try it free for 7 days first, no card, no account.
Questions? Get in touch
Questions
Breaking Pen pauses and asks for a key. Nothing is uninstalled and nothing is lost. Buy once, paste the key, and carry on.
Yes. After the one-time model download, Breaking Pen needs no connection at all. Your text never leaves your Mac.
One key, up to five Macs. Each Mac takes a seat when you paste the key, and you can free a seat from Settings on that Mac at any time.
Yes. Every change shows a Revert button, and the last ten are kept. You can also turn on a preview, so nothing changes until you press Replace.
A Mac with Apple Silicon on macOS 14 or later, about 1 GB of disk for the model, and the Accessibility permission so it can read your selection.