Improve your English in any app.
Select any text, hold Ctrl and tap C twice. Then rewrite your reply, look up a word you don't know, or translate a message, right inside Outlook, Slack, Word or wherever you're working.
Animated demo: in an email, BrushUp looks up the word "reschedule", translates a sentence into Spanish and Chinese, and rewrites the reply.
Try it: press C to move down the list.
Three actions, one shortcut you already know.
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Select text in any app
A word, a sentence, a whole draft. In an email, a chat, a document or a web page.
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Hold Ctrl, tap C twice
A small switcher opens at your cursor, already on the action you ran last. To repeat it, just let go.
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Tap C to choose, let go to run
Rewrite opens the popup with your presets. Lookup and Translate answer in a window of their own and never touch your text.
Better English, right where you typed it.
Six presets, each a carefully tuned prompt. Pick one with its number, see exactly what changed, and press Enter to put the new text back in place.
Thursday is good for me, but can we make it 4 pm? I have a other meeting until 3:30.
See every change
Deletions struck through, additions underlined. Press tab for the clean result.
Streams as it writes
Words arrive as they're written. Cancel anytime, or press T to try another version.
Undo replace
Replaced the wrong thing? One click puts your original text back in the app.
Your own presets
Edit any prompt, reorder the list, add presets of your own, delete what you don't use.
Understand any word without leaving the page.
- Meaning and examples in clear English, with the pronunciation in IPA.
- A line in your own language under each meaning, so nothing gets lost.
- Hear it. Press V to have the word read aloud.
- A memory aid to make it stick, and every lookup comes back later as a flashcard.
- Could we reschedule the call to Thursday?
- The launch was rescheduled for next month.
Read it in every language you speak.
- As many languages as you like. One block each, in the order you set.
- Skips the obvious. A language the text is already in is left out.
- Check it against the source. The original is one press of O away.
- Your text stays as it was. Translate opens its own window and never pastes over anything. Copy a block if you need it.
Get better from your own writing.
Everything you rewrite, look up and translate is saved on your PC. BrushUp turns it into practice that's about your English, not a textbook's.
Flashcards from your lookups
Every word you looked up becomes a card. Flip it, mark it known, and it leaves the deck.
Insights from your rewrites
BrushUp reads back through your edits and shows the mistakes you make most, with a tip for each.
And a searchable History of everything you've run, with the changes for every rewrite. It never leaves your PC; delete any entry, or all of it.
Watch a whole working session.
Quiet in the tray until you need it.
Works in any app
Outlook, Word, Slack, Notion, browsers, even older programs.
Ready on install
Sign in with your email and a code. No password, no API key, no model to pick.
Keyboard-first
Numbers pick presets, arrows step through them, Enter runs, Esc closes.
Dark, light or system
Follows your Windows theme, just like this page.
Updates itself
Signed releases install in the background. No installers to hunt for.
Windows 10 and 11
A small native app for x64 PCs. Your license moves with you to a new PC.
Your writing stays close.
Your text goes straight to the AI model.
The app sends the text you select directly to the language model, through OpenRouter. BrushUp's own server never receives it. It only checks your license and gives the app its access key.
Your history stays on your PC.
Rewrites, lookups, translations, flashcards and insights are stored locally. Delete any entry, or clear it all, whenever you like.
Nothing is read until you ask.
BrushUp reads your selection only when you press Ctrl C C, and replaces text only when you press Enter in the Rewrite popup.
Everything included. One small price.
One plan, billed yearly. No tiers, no credits, no add-ons.
- Rewrite, Lookup and Translate in every app
- Every preset, fully editable, plus your own
- Translate into as many languages as you like
- Learn: history, flashcards and insights, kept on your PC
- Built-in AI. No API key, no model to pick
- Signed automatic updates; your license moves to any PC
What happens when the trial ends?
BrushUp keeps working. Rewrites are never blocked; you'll see a gentle reminder now and then until you buy a license.
How do I buy?
Download the app and start the trial. When you're ready, click Buy inside the app. Checkout takes a minute and your license activates on its own, with no key to paste.
Do I need an account?
Only your email. The first time you open BrushUp you enter it and a 6-digit code we send you. There's no password, and no API key to set up.
Can I use it on another computer?
Yes. Your license follows your account, not your machine. Sign in on the new PC and you're set, one active machine at a time.
Which apps does it work in?
Almost all of them. BrushUp reads the selection through Windows UI Automation and falls back to the clipboard for apps that don't support it.
Why only €5.10?
It's an early-adopter launch discount, 83% off the regular €30 a year, applied automatically at checkout while it lasts.
Better English, wherever you write.
Runs quietly in your tray. Free for 14 days, no credit card.