Charm and Raycast both fix spelling and grammar on a Mac, and both use the same macOS Accessibility permission to read and replace text in whatever app you are using. The real difference is when the fix happens. Raycast waits for a hotkey: you double-tap the right Shift key, and its AI returns a corrected version. Charm works continuously as you type, on your own hardware, with no key press. One is a launcher with a correction command in it; the other is a correction layer that is always on.
What does each tool actually do?
Raycast is a keyboard launcher with a large extension ecosystem, and correction is one command inside it. Its built-in "Fix Spelling and Grammar" AI Command corrects mistakes and highlights what changed, and Quick Fix replaces text directly in the focused app. Raycast's own AI Commands manual confirms Quick Fix is bound by default to a double press of the right Shift key.
Charm is a menu bar app built around the text you type. It runs three features together: Spells corrects spelling word by word, Polish corrects grammar when you finish a sentence, and Oracle predicts your next word, which you accept with Tab. All three run at once, so an email, a Slack message and a document get the same treatment. Our guide to the best autocorrect for Mac covers the wider category.
Does Raycast fix your text as you type?
No. Raycast corrects on demand, when you press the hotkey. That is deliberate: nothing changes until you ask for it, which some writers strongly prefer. The cost is that every message, comment and subject line needs its own trigger, and the ones you forget go out uncorrected.
Charm inverts that. Corrections land as you type, so the typo you made three words ago is already gone by the time you reach the end of the line, and the sentence is checked the moment you type the full stop. There is nothing to remember and nothing to invoke. Charm also adds next-word prediction, which Raycast does not offer at all; our complete guide to word prediction on Mac explains how that side of it works.
What does each one cost?
Raycast has a genuinely free plan, which is a real advantage. Paid plans start at around $8 per user per month on the annual billing option, with a further add-on for the strongest frontier models, and the free tier includes a limited allowance of AI messages. AI Commands were offered free during their beta, and a beta is temporary by definition, so check the current Raycast pricing page rather than trusting any figure in an article.
Charm is $9.99 once. That single payment covers up to 3 Macs, includes updates, and carries a 14-day money-back guarantee. There is no account, no seat, no tier and no renewal date. Over three years, a plan at around $8 a month comes to roughly $288 per seat, while Charm stays at the price you paid.
| Feature | Charm | Raycast |
|---|---|---|
| Corrects as you type | Yes, continuously | No, hotkey per fix |
| Works in browsers and Electron apps | Via Fix Selection (Option-Command-V) | Yes |
| Word prediction | Yes, Oracle | No |
| Where text is processed | On your Mac | Hosted AI models |
| Works offline | Yes | No, AI needs a connection |
| Rewords or rephrases your writing | Never, mechanics only | Can rewrite beyond the mistake |
| Extension ecosystem | No | Yes, large |
| Pricing | $9.99 once, 3 Macs | Free tier, Pro from around $8/month |
Which one is better in browsers and Electron apps?
Raycast wins this one outright. Quick Fix reads and replaces text the same way everywhere, so Chrome, Slack, Notion, VS Code and any other Electron app behave exactly like a native Mac app. If most of your writing happens inside a browser tab, that consistency matters a great deal.
Charm gives live inline correction in native Mac apps, and in browsers and Electron apps it switches to Fix Selection: highlight the text and press Option-Command-V, and Charm corrects it in place. That split is deliberate. Chromium's accessibility layer does not reliably support the range-based writes that live sentence correction needs, and forcing it produces duplicated or misplaced text. We would rather ship a hotkey that always works than an inline path that sometimes mangles a paragraph.
Which one keeps your writing more private?
Charm, clearly. Every correction runs on your own Mac using small language models through Apple's MLX framework, so the words you type never leave the machine. Charm needs no account, works on a plane with the wifi off, and skips password fields entirely. If you want the background, we wrote about what on-device AI actually means for privacy.
Raycast AI is powered by hosted models, so text you send to Quick Fix travels to a server. That is not a flaw, it is the mechanism: hosted frontier models are how Raycast gets its quality. But it does mean an NDA-covered paragraph or client email passes through a third party, and the feature stops working when your connection does. For regulated work, that decides the choice on its own.
Where does Raycast genuinely win?
Raycast has advantages Charm does not try to match. Its install base and extension store are vastly larger, so you get a launcher, clipboard history, window management, snippets and hundreds of integrations from the same app you use to fix a sentence. Third-party grammar extensions in its store show the demand already exists inside its user base.
Its correction quality on nuanced grammar is also stronger. A frontier cloud model has far more capacity than a 2 to 3 billion parameter model running locally, and on complex or unusual sentences that gap shows. Raycast also has a free tier, so you can try the workflow at no cost, and it covers browsers and Electron apps with the same reliability as native apps. Those are real, and worth weighing honestly.
Does either tool change your voice?
Charm does not, by design. It fixes mechanics only: spelling, grammar, punctuation and capitalisation. It will never rephrase a sentence, tighten your wording or make your writing sound more formal, because the version that arrives is the one you wrote. That is the same instinct behind our Charm vs Grammarly comparison and our look at Apple Intelligence writing tools.
Raycast's fix is an AI rewrite, so its scope depends on the prompt behind it. Developer Pawel Grzybek's write-up on moving from Grammarly to Raycast AI makes the point well: he had to hand-tune a custom command precisely so the model would correct his spelling and grammar without suggesting the tone and phrasing changes he did not want. That tuning works, but it is work you have to do.
Frequently asked questions
What is the difference between Charm and Raycast for fixing text?
Raycast fixes text on demand: you double-tap the right Shift key and its AI returns a corrected version. Charm fixes text continuously as you type, correcting each word and each finished sentence with no key press at all.
Does Raycast's grammar fix cost extra?
Raycast has a free plan with a limited allowance of AI messages, and Pro costs around $8 per user per month on the annual plan, plus an add-on for frontier models. Charm is $9.99 once for up to 3 Macs, with no recurring charge.
Does Raycast send my text to the cloud?
Yes. Raycast AI runs on hosted models, so text you send to Quick Fix is processed on a server. Charm runs small language models on your Mac, so nothing you type leaves the machine, it works offline, and it needs no account.
Which works better in Chrome and Electron apps?
Raycast. Quick Fix uses the same read-and-replace mechanism everywhere, so browsers and Electron apps behave like native apps. Charm gives live inline correction in native Mac apps and uses Fix Selection (Option-Command-V) in browsers, where Chromium's accessibility layer is unreliable.
Can I use Charm and Raycast together?
Yes, and many people do. Raycast is a launcher and command runner; Charm is a typing layer that corrects spelling, grammar and punctuation as you write. Both use the same macOS Accessibility permission and coexist without conflict.