One tap to answer any message. In your tone.
One tap to answer any message. In your tone. In your context and style. Anywhere you type. Select the thread, press Option+A, and aiCat finishes the reply you already started — reading the post and the comment, and sounding like you rather than like an assistant.
Replying well takes the longest on the messages that matter: a comment under your post, a customer asking something awkward, a thread you have half-answered and abandoned. Paste it into a chatbot and you get a reply that is polite, generic and unmistakably machine-written — so you rewrite it anyway, and the tool saved you nothing.
aiCat reads what is around your cursor — the post, the comment, and the words you have already typed — works out which part is yours, and continues it. It matches your register, your sentence length and your punctuation, including the habits that make writing sound human. What comes back is the rest of your reply, ready to send.
Finish the message, step by step
- Select the thread, not just the last lineThe post and the comment both go in. An answer written from the last sentence alone is how replies end up addressing the wrong thing.
- Start your reply, even badlyThree or four words are enough. Tone is carried by word choice and sentence length, and those are what gets copied.
- Press Option+A and read it before you sendThe continuation starts exactly where you stopped typing. Press Detect AI on it if you want the second opinion.
What makes aiCat's finish the message different
It continues you, it does not replace you
The result starts exactly where you stopped typing. aiCat never restates the context, never greets anyone, and never rewrites the words you chose.
It reads the whole conversation
The post and the comment both go in, so the answer addresses what was actually asked rather than the last sentence in isolation.
It is written not to read as AI
No “delve”, no “moreover”, no “I hope this helps”, no tidy three-part lists. aiCat also scores its own output for how AI-written it reads, so you can check before you send.
Anywhere you type
A comment box, an email client, a support console, a code review, a DM. It works on selected text at the operating-system level, so there is no integration to wait for.
Your languages, your layout
aiCat knows which languages you write in, so it answers in the right one — and recognises text typed with the wrong keyboard layout instead of guessing at it.
People use it for
- Replying to comments under your own posts without sounding like a brand account
- Answering a customer message you have already half-written
- Finishing a Slack or email reply you abandoned three hours ago
- Responding in a language you write slowly in, in your own register
- Turning three words of intent into the reply you meant to write
Answer the comment that has been sitting there since Tuesday
Free to start, 10 aiCatCoins a month. macOS, Windows and Linux.
What this costs to run
A reply is a short request against a mid-range model, which is a fraction of an aiCatCoin — in practice a few hundred replies out of a month's Premium allowance, with everything else aiCat does paid for out of the same coins.
The reason it is a Premium feature and dictation is not: this one writes text nobody asked for, into somebody's live conversation, and that is a thing to be deliberate about rather than to give away by default.
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 |
Try it on a reply you have already half-written
No account needed to begin. Download for free and press one key.
Frequently asked
Can I finish the message 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 finish the message 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.