Free
$0
Everything that runs on your Mac.
- The offline checker
- Apple Intelligence
- Local models (Ollama, LM Studio)
- Built-in styles
- Every shortcut
Blazing-fast proofreading, everywhere you type.
Select text anywhere you type and fix it in less than a second. Keyboard-first and lightweight, so you stay in your flow.
Free · Fully private with local models · macOS 13 or later
Works in
- Messages
- Slack
- Notes
- Safari
- Chrome
- Notion
- Linear
- Gmail
- ChatGPT
- Claude
- Outlook
- Pages
Speed
Small, fast, built in Rust.
SuperEditr is a native Mac app with a Rust engine. Fixes show up while your hands are still on the keys.
- Offline fixes in about 20 ms. The built-in checker needs no model and no network.
- Apple Intelligence: first words in about 0.4 s, done in about 0.7 s. On-device, measured on a Mac Studio.
- A 13.5 MB download. It reads your selection off the main thread, so a slow app can’t freeze your Mac.
Terminal — zsh
The same engine runs from the command line, which is how we time it.
SuperEditr does one thing, and does it really well.
It fixes your writing wehrewhere you wrote it. Focused, configurable, and free of bloat.
Keys
Effortless key bindings for everything.
Every action has a shortcut, you can change any of them, and any style can have its own. Try them on the panel: it replays recorded answers, while the app works on your text.
Slack
# launch
/warmer and shorter — in the app, this goes to your AI
tab next␣ keep↩ apply
Try meClick the panel and use your keyboard, or tap the keys above.
Your AI
Bring the AI you already pay for.
Or don’t use one at all. Pick what suits the moment in Settings, and change it whenever you like.
Private
Fully private with local models On your Mac
Use the built-in checker, Apple Intelligence (macOS 26 or later on Apple silicon), or a local model through Ollama or LM Studio. Your text never leaves your Mac, and it all works offline.
AI
Your own AI, if you want it Your key or account
Connect a Claude, OpenAI or Gemini API key, or use your Claude subscription through Claude Code. With Haiku 5.5, a thousand reviews cost under 10¢.
Models
Scan finds keys and local models already on your Mac. API keys are stored in your Keychain.
On-device or local, it never leaves your Mac. With a cloud key, your text goes straight from your Mac to that provider, and never to SuperEditr. There are no SuperEditr servers, accounts or analytics.
How it compares
| Feature | SuperEditr | Subscription writing assistants |
|---|---|---|
| Pricing | Free, plus a one-time Pro upgrade | Monthly subscription |
| Fully private option (on-device or local model) | Yes | No |
| Works offline | Yes | No |
| Uses your own AI | Yes | No |
| Open source | Yes | No |
| Keyboard-first fix in place | Yes | No |
Pricing
Simple, fair pricing
Everything that runs on your Mac is free. Pay once for Pro to connect your own AI.
Pro
Launch priceRegular price $24Launch price $19one-time
Configure your own AI, your own styles.
- Everything in Free, plus:
- Your own API keys (Claude, OpenAI, Gemini)
- Your Claude subscription, via Claude Code
- Custom styles and prompts
- A shortcut for each style
One year of updates included, and it keeps working forever after. Use it on 3 Macs. 14-day refund.
Open source
SuperEditr is open source under GPLv3. Build it yourself for free, or get the signed, notarized app that updates itself.
Terminal — zsh
- Bugs and ideas: file issues here.
- Linux: the code is open if you’d like to help port it.
Questions
Is it private? Does it work offline?
Fully private with local models. With the built-in checker, Apple Intelligence (macOS 26 or later on Apple silicon) or a local model through Ollama or LM Studio, your text never leaves your Mac, and no network is needed. With a cloud AI, see the question below.
What’s free, and what does Pro add?
Everything that runs on your Mac is free: the offline checker, Apple Intelligence, local models through Ollama or LM Studio, the built-in styles and every shortcut. Pro is a one-time purchase that adds your own API keys (Claude, OpenAI, Gemini), your Claude subscription through Claude Code, and custom styles and prompts, each with its own shortcut.
Where does my text go if I connect a cloud AI?
Straight from your Mac to the provider you chose, under your own key or plan. It never passes through SuperEditr: there are no SuperEditr servers, accounts or analytics. If your text must stay on your Mac, use the offline checker, Apple Intelligence or a local model.
Which apps does it work in?
Anything where you can select text: Mail, Messages, Notes, Slack, Chrome, Safari, and AI chat windows like Claude and ChatGPT. It reads only the text you select and never reads password fields.
Why does it need Accessibility access?
macOS requires it for any app that reads a selection in another app and writes text back. It’s the only permission SuperEditr asks for.
Is there a Windows or Linux version?
Windows is coming soon. There’s no Linux version yet; the source is open if you’d like to help build one.
SuperEditr for Windows is coming.
The same speed, the same keys and the same Rust engine, on your PC. Watch the project on GitHub to hear when it ships.
Watch on GitHubOn a Mac? Download SuperEditr now: free, macOS 13 or later, 13.5 MB.