microFix lives in your menu bar. Keep typing in whatever app you're in, press the fix key, and the run of text you just typed is rewritten in place with the correct spelling. No extra window, no copy-paste.
Mail, chat, editors, browsers — wherever you're typing, the fix lands at your cursor. It joins the app's own undo history, so ⌘Z always takes you back.
MailSlackBrowserEditorNotesTerminal
No extra windowNo copy-paste⌘Z to undo
02ONE KEY, EVERY MISTAKE
You don't have to pick the mistake.
Typos, missing apostrophes, words run together, text typed on the wrong keyboard — it's all the same single key. One action: take the run you just typed and make it right in the language you're writing.
What you typed
I'll snd yuo the deck tomorow
After the fix key
I'll sendyou the deck tomorrow
Plain mistypes, fixed in one pass — without touching slang or contractions you chose on purpose.
What you typed
i dont think thats going to work
After the fix key
Idon't think that's going to work
Missing apostrophes and the lone lowercase i — orthography, not style, so they always get fixed.
What you typed
sorry for the lateresponse
After the fix key
sorry for the late response
Words that ran together while typing fast are split back apart.
What you typed
dkssudgktpdy
After the fix key
안녕하세요
Forgot to switch layouts? Text typed as Korean or Russian on a QWERTY layout is recovered into the real thing.
There's no mode to choose. The AI works out from context what kind of mistake it's looking at.
03ANY LANGUAGE
Any language.
There's no list of supported languages to check. Korean or Russian typed on the wrong layout, Spanish or German missing their accents — microFix knows what the text was meant to be. The UI speaks 14 languages.
KOREANdkssudgktpdy안녕하세요
RUSSIANghbdtn rfr ltkfпривет как дела
SPANISHque hora es¿Qué hora es?
GERMANfur grussen uberfür grüßen über
Wrong-layout recovery and accent restoration — same single key.
04SECOND CHANCES
Press again for another take.
Not the spelling you wanted? Press the key again. Alternatives from the same response cycle locally, with no extra wait. After the last one you're back at your original input — handy when an IME has already committed the wrong thing.
1I'll send you the updated deck
2I will send you the updated deck
3I'll snd yuo the updated deck (original)
⌥ spaceeach press cycles
05PRIVATE BY DESIGN
Keystrokes are never recorded.
What you type lives only in an in-memory ring buffer, dropped on every click, app switch, and secure input. Nothing touches disk or the cloud. A fix sends only the run being fixed plus a little surrounding context — and none of it is stored on the server.
Keystrokes
Inside this Mac
The run you typedNearby context
AI fixnot stored
Memory only, never loggedPassword fields untouchedOn failure, nothing changes
06THE DETAILS
The details do the heavy lifting.
See what's about to changeWhile a fix is in flight, the text that will change is underlined — an overlay that never touches the app's own state.
Cycle alternativesPress again for the next candidate; a full loop returns to your original input. Run out, and it refetches with the ones you've seen excluded.
Personal dictionaryTeach it names and jargon. Shares one dictionary with microVoice.
Replacement rulesDeterministic rewrites for terms you always want spelled one way.
Rich editors, out of the boxThe underline works in editors like claude.ai and Notion with nothing to install. Wrapped text gets one per line.
Your trigger key⌥Space by default — remap to ⇧Space, an F-key, whatever you like. It never steals the space your IME needs.
Secure input respectedPassword fields are neither read nor written. macOS secure input always wins.
⌘Z friendlyFixes join the app's undo history (in apps with accessibility replace).
07REQUIREMENTS & FAQ
Requirements & FAQ
OSmacOS 15 (Sequoia) or later
PermissionsAccessibility only
FixingCloud AI (text only, never stored)
QuotaBASIC 2,800 / PRO 5,700 fixes per month
AccountFree sign-in + 2-day full trial
LanguagesFixes any language. UI in 14 languages
What kinds of mistakes can it fix?
Romaji and pinyin left unconverted, homophone slips, dropped letters, half-converted fragments, text typed on the wrong keyboard layout, missing accents. It's all one action: take the run you just typed and make it right.
Does it work offline?
Fixing needs a network connection. When it can't reach the server — or anything else fails — it does nothing at all: not a single character of yours changes.
Is what I type recorded?
No. Keystrokes live only in an in-memory ring buffer that's dropped on clicks, app switches, and secure input. A fix sends only the run being fixed plus nearby context, and the server stores none of it.
Does it fight with my IME?
No. It never steals keys your IME needs (like ⇧Space while composing kana), and when there's nothing to fix, the original keystroke is passed through untouched. microFix's job starts after the IME has committed.
Does it work inside the browser?
Yes. Plain form fields work out of the box, and rich editors like claude.ai or Notion work too — including the underline preview, with nothing extra to install.
Simple pricing
Yearly only. Try everything free for 2 days first.
Your license key appears on the Licenses page of your microAI account after purchase and stays tied to your account. Payment is handled by our Merchant of Record, taxes included. Each license activates a limited number of Macs.
