Proofreading that checks the facts, not just the commas
Option+A on any selection: is this correct, what is unsupported, and what should you also know. With sources.
A grammar checker will happily approve a confident, well-punctuated, completely wrong sentence. That is the error that actually costs you.
aiCat proof-checks on three axes at once: correctness, truth, and what the text leaves out — each claim listed with a status and, where one exists, a link.
Proofread, step by step
- Select what you want checkedYour own draft, a colleague's message, a contract clause, an article somebody forwarded.
- Press Option+AYou get grammar, and then the part grammar checkers skip: each claim marked supported, unsupported, false or unclear.
- Hover the scoresTruth and Insight each open onto the phrases behind them, so the number is something you can argue with rather than something you accept.
What makes aiCat's proofread different
Truth and Insight scores
Two numbers, because they are two questions: how much of it is actually supported, and how much of it says anything non-obvious. Hover either one for the phrases behind the score.
Claim by claim
Supported / unsupported / false / unclear, plus a one-line explanation for each.
What is missing
The context a careful reader would want and the author left out.
Works on anything
A contract clause, a news article, a colleague's Slack message, your own draft.
People use it for
- Checking a claim before you forward it
- Reviewing AI-written drafts
- Reading news in a second language
Check the thing you were about to forward
Free to start, 10 aiCatCoins a month. macOS, Windows and Linux.
What a fact-check costs against what it saves
Checking claims costs more than fixing commas — it is a longer request and, when sources are involved, a grounded one. It is still a small fraction of a coin, and it is the request on this list most likely to have been worth its price.
aiCat picks the model per task rather than per subscription, so a comma fix does not get billed at the rate a claim check needs.
aiCat pricing at a glance
| Plan | Price | aiCatCoins / month | Max selection | What it unlocks |
|---|---|---|---|---|
| Free | $0 | 10 | 500 chars | Everything aiCat does, plus free dictation and your own memory |
| Premium | from $6/mo (list $10) | 3 000 | 5 000 chars | Think More, read-aloud, encrypted memory, premium models |
| Team + Offline | from $18/member | 12 000 | 50 000 chars | Edit your memory, MCP access, local models, team sync |
| Enterprise | from $90/member | 150 000 | Unlimited | SSO, audit, best coin rate |
Grammar is the easy part. Try it on a claim
Download for free — no account needed to start.
Frequently asked
Can I proofread text in any app?
Yes — aiCat reads the selection at the OS level, so it works in native apps, browsers, IDEs, terminals and PDF readers.
Is proofread free?
The Free plan includes everything aiCat does, with 10 aiCatCoins per month. Think More and read-aloud start at Premium, which starts from $6/month.
Which AI model does it use?
By default the cheapest model that is good enough — currently Gemini Flash Lite, falling back to Gonka. You can pick Gemini Pro, Claude, GPT or a local model instead, per task.
Does aiCat work in every application?
Yes. It works at the operating-system level rather than through per-app plugins, so it covers native apps, browsers, IDEs, terminals and PDF viewers alike.
Is my text sent anywhere?
Only the text you explicitly act on is sent to the model you selected, for that one request. Your history is stored locally on your device. Team + Offline can run a local model so nothing leaves the machine at all.