How to rewrite text anywhere, without copying it anywhere
The copy-paste round trip is why most sentences you dislike get sent anyway. This is how to remove it — including the one permission macOS will ask for and why.
Step by step
- Install aiCatDownload the build for your operating system and open it. Two minutes, no account needed to start.
- Grant one permissionmacOS asks for Accessibility so aiCat can read your selection and type the result back. Windows and Linux ask for nothing unusual.
- Select any textIn any app: your mail client, an IDE, a browser, a PDF viewer.
- Press Option+A (Alt+A on Windows and Linux)The rewritten version appears in a small window over your selection, with the corrections listed.
- Press ApplyThe text is replaced in place, if the field is editable.
Two minutes to install, one key to use
Free to start, no card, no account needed to try it.
The hotkeys (all editable)
| Keys | What happens |
|---|---|
| Option + A | Use aiCat on the selected text. In a field you can type in it proof-reads; on something short in another language it translates; otherwise it explains — and answers follow-ups |
| Option + D | Dictate: speak, and the words appear at your cursor |
| Option + H | History of everything you selected and what came back |
| Option + S | Settings — hotkeys, models, languages, your memory |
Two actions instead of eight
The arithmetic is not the point on any single sentence — fifteen seconds is nothing. It is the point across a day, and it is much more the point on the sentences you decide not to fix because fixing them means leaving what you are doing.
That is the measurable difference in practice: not better rewrites, but more of them. The paragraph you would have shrugged at is the one this changes.
Rewrite something without leaving this page
Download for free and select any sentence on screen.
Frequently asked
Does it work in apps without a browser extension?
Yes. aiCat works at the operating-system level, so it covers native apps, terminals, IDEs and anything else that has selectable text.
Can I change the hotkey?
Yes — every hotkey is editable during onboarding or later in Profile → Hotkeys, and each one can be reset to its default.
Which operating systems does aiCat support?
macOS (Apple Silicon and Intel), Windows 10/11, and Linux as AppImage, .deb or .rpm.
How much does aiCat cost?
Free to start, with 10 aiCatCoins a month and everything aiCat does included. Premium starts from $6 a month (40% off the $10 list price) and adds Think More, read-aloud, encrypted memory, 5000-character selections and 3000 coins a month. Team + Offline starts from $18 per member and adds local models, a memory you can edit by hand, and MCP access from your other tools. Coins can also be bought outright instead of subscribing, and they do not expire.