Type as fast as you can think.
Cotypist predicts your next words in every Mac app — on your Mac, not in the cloud. Press Tab to accept. Eerily good at picking up on what you're about to write.
Free to download for Apple Silicon — 30-day Pro trial, then a free plan. No credit card required.
How it works.
Still your words. Just faster.
Install
Drag the Mac app into Applications. It runs locally on Apple Silicon and takes only a few minutes to set up, no account required.
Type
Open any Mac app and write the way you always do. Cotypist predicts the rest of each sentence.
Don't like a suggestion? Just keep typing. It'll snap to the word you meant within a letter or two.
Tab
Press ⇥ to take the next word or the whole line.
The more you write, the better Cotypist gets at sounding like you. It picks up your vocabulary, your names, and the way you phrase things.
The problem with other AI writing tools
Why dancing with the AI feels better than delegating to it.
The "prompting" way
We've all been there:
You stop writing. You open a chatbot. You write a prompt. You wait.
You get a robotic wall of text.
You spend ten minutes editing it to sound like you.
Frustrated, you trash it and just write the damn thing yourself.
The Cotypist way
You never leave your flow.
You start typing, and the right words just appear—your words, the ones you would have written anyway.
No more wrestling to get the thoughts out of your head.
Tab. Flow. Smile.
What felt like work now feels like flying.
We believe in augmenting your writing,
not replacing it.
Cotypist suggests words you'd write anyway—just faster.
Your work, written with AI — not by AI.
Same writing. Less typing.
Suggestions appear inline, in whatever app you're already in. Tab takes the next word; keep typing if you don't want it. After a few minutes you barely notice it's there.
Cotypist picks up on your style fast. Cut your typing roughly in half, without losing your voice.
WORKS OFFLINE
All processing happens on your Mac. No prompts ending up in someone else’s training data. The kind of privacy you’d want from your keyboard.
Apple Mail, Slack, Notion, Obsidian, your favourite browser, and most other Mac text fields. Same tool everywhere, no per-app setup.
No more flipping to ChatGPT, prompting, waiting, editing. Cotypist suggests your next words right in the app you’re already in.
Suggestions land without perceptible delay. It feels like skipping the step between thinking a word and typing it.
⌘
Don’t like a suggestion? Just keep typing: Cotypist usually updates to the word you actually wanted within a letter or two.
Stuck on the next word? Cotypist always has one. Even rejecting the suggestion is usually enough to get moving again.
Partial match? Accept suggestions word-by-word. Switch between AI assistance and your own writing at any time, even mid-sentence.
⇥ to accept word-by-word
Cotypist spots typos in the word you’re typing and offers the fix inline. Tab to apply; no pop-ups, no red squiggles to clean up later.
recieve → receive
😊 ❤️ 🚀 ✨ 👍
Type a colon and the right emoji appears. Filter by typing a shortcode, no need to scroll the picker.
你 ñ ü 日 ø
Cotypist works for non-native English writers, dyslexic typists, people with hand arthritis, one-handed typists, and (yes, really) Neuralink implant wearers.
Where Cotypist saves the most time.
Email, Slack, support replies, AI prompts, your novel — this is where the keystrokes really stack up.
Zip through your inbox. Craft thoughtful replies in half the time.
✦ ✦ ✦ ✦
Faster prompts for ChatGPT, Claude, and coding agents. Cotypist even helps you find the right words to prompt your other AI tools.
Cotypist learns your campaign voice as you go. Less time staring at the blinking cursor; more drafts out the door.
Post more in your own voice. Cotypist doesn’t try to write for you, it just finishes the sentence you’d have typed.
< 5 min
Fewer words per reply, ticket after ticket. The time savings add up fast.
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Docs are repetitive by design — which is exactly where Cotypist’s predictions land hardest.
Levels the playing field for non-native speakers, dyslexic writers, and people who type with one hand. (Yes, it works in Norwegian. And Hinglish.)
What people say once they've tried it.
It is very well-designed, and remarkably Mac-assed. It respects your privacy and all the best conventions of macOS.
[...]
Cotypist’s suggestions are eerily good.
John Gruber
Daring Fireball
Review
Cotypist has quietly become one of my must-have writing tools. It doesn’t try to replace my voice – it simply completes my sentences in a way that feels natural and helps me type much faster.
[...]
If you code-switch a lot or just want smart autocomplete that feels like it’s reading your mind (without sounding like a robot), Cotypist is absolutely worth using.
As someone who writes for a living (not creative, but repetitive technical type stuff) Cotypist has been a lifesaver.
I think it will literally save my wrists from carpal tunnel.
When I saw it I thought: Wow. No. I do not want that. But I continued to see everybody rave about it and so I was like, fine, fine, I’ll give it a shot. And well, everybody else was right. It’s bloody fantastic.
[...]
It’s so freakin' cool.
Quinn Nelson
Snazzy Labs
YouTube Review
I have never learnt how to type fast before. I am a slow typist. When I started this email I had just rebooted my Mac so Cotypist was not running. I was typing this email and I thought "where is Cotypist?" as I was typing so slowly.
Once I realised Cotypist was not running and launched it, it was such a relief.
I will never go back to manual typing!!
I’ve been using Cotypist on macOS. Sometimes it feels like it’s reading my mind when I’m typing.
I really enjoy using Cotypist already. I think this is one of the best AI tools that help me be more productive every day.
I just love how it integrates everywhere I type so seamlessly. I almost forgot how it was before that.
Frequently asked questions
Tab. Flow. Smile.
Like a friend who finishes your sentences. On mobile? We'll send you a link to download Cotypist on your Mac.