Guides & comparisons
Everything aiCat does, how it stacks up against the tools you already pay for, and how to spend far less on AI without noticing the difference.
What aiCat does
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.
Rewrite any text, anywhere on your computer
Select the sentence. Press Option+A. aiCat rewrites it — fixing grammar, and the awkward collocations that quietly mark you as a non-native speaker.
A paraphraser that lives in your keyboard, not in a browser tab
Select any sentence in any application and get a clean paraphrase in one tap — no pasting, no tab-switching, no word limit games.
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.
Translate whatever is on your screen, without leaving it
Select foreign text anywhere and press Option+A. Translation, plus the ten keywords worth learning with transcriptions.
AI checker that works on whatever you are reading
Option+A gives you a likelihood that the selected text was written by a model, with the specific signals that produced the number.
Select the confusing part. Press one key.
Option+A turns jargon, legalese, an error message or a dense paragraph into a plain sentence — then a chat if you want to dig in.
Have anything on your screen read to you
Option+A reads the selection out loud, with speed, volume, trimming and save. Nothing selected? The same key starts recording you.
Dictate into any text field on your computer
Press Option+D, talk, stop. The transcript appears at your cursor — in Slack, in your IDE, in a form, anywhere.
Select-to-Ask — the chat already knows what you are looking at
Option+A opens a chat with your selection attached and the first answer already being written. Option+A does the same with web search on.
Comparisons
aiCat vs Grammarly
How aiCat and Grammarly actually differ on coverage, languages, workflow and price — including the cases where Grammarly is the better buy.
aiCat vs QuillBot
How aiCat and QuillBot actually differ on coverage, languages, workflow and price — including the cases where QuillBot is the better buy.
aiCat vs DeepL
How aiCat and DeepL actually differ on coverage, languages, workflow and price — including the cases where DeepL is the better buy.
aiCat vs ChatGPT
How aiCat and ChatGPT actually differ on coverage, languages, workflow and price — including the cases where ChatGPT is the better buy.
aiCat vs LanguageTool
How aiCat and LanguageTool actually differ on coverage, languages, workflow and price — including the cases where LanguageTool is the better buy.
aiCat vs Wispr Flow
How aiCat and Wispr Flow actually differ on coverage, languages, workflow and price — including the cases where Wispr Flow is the better buy.
aiCat vs GPTZero
How aiCat and GPTZero actually differ on coverage, languages, workflow and price — including the cases where GPTZero is the better buy.
aiCat vs Notion AI
How aiCat and Notion AI actually differ on coverage, languages, workflow and price — including the cases where Notion AI is the better buy.
aiCat vs Google Translate
How aiCat and Google Translate actually differ on coverage, languages, workflow and price — including the cases where Google Translate is the better buy.
aiCat vs Raycast AI
How aiCat and Raycast AI actually differ on coverage, languages, workflow and price — including the cases where Raycast AI is the better buy.
Best-of guides
The best AI rewriting tools in 2026
10 rewriting tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best AI detectors in 2026
9 detection tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best translation tools in 2026
9 translation tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best proofreading tools in 2026
9 proofreading tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The cheapest AI tools that are actually good enough
10 value tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best AI tools for Mac in 2026
10 mac tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best AI tools for Windows in 2026
10 windows tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
Grammarly alternatives that are cheaper, broader, or both
9 alternatives tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
QuillBot alternatives worth switching to
9 alternatives tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
DeepL alternatives worth a look
9 alternatives tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best speech-to-text apps in 2026
9 dictation tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
The best AI writing assistants in 2026
9 writing tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
AI tools for teams, priced per person and per use
9 teams tools compared in August 2026, listed alphabetically, with the situation each one is the right answer for.
How-to
How to answer any comment fast — and still sound like yourself
The replies that take longest are the ones that matter: a comment under your own post, an awkward customer question, a thread you abandoned half-answered. Here is how to finish them quickly without the result reading as machine-written.
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.
How to translate selected text without leaving the app
Translating a message usually means leaving the message. Here is how to set up in-place translation once, and why telling the tool which languages you read is the whole configuration.
How to check whether text was written by AI
A practical guide to AI detection, starting with the part the vendors' own pages skip: what a detector can and cannot establish, and what to do with a high score.
How to find the best AI tool for what you actually do
A short method for choosing between forty products that all demo well: count the steps, check the coverage, compare the floor price, and ask who is picking the model.
How to dictate into any application
How to dictate into any application on macOS and Windows — including what the built-in tools already do for free, and the point at which they stop being enough.
Dictation that types while you are still talking
Why watching the words arrive changes dictation more than accuracy does — and how to set up live typing, including what happens when the connection drops mid-sentence.
AI for support replies, in the helpdesk you already use
How to put an assistant inside the helpdesk you already use, without an integration, a migration, or a per-seat licence for the agents who barely touch it.
How to pay far less for AI without noticing the difference
Where AI money actually goes, and four changes that cut it without changing what you get back — starting with the most common way to overpay.