Underlines appear right where you write.
Nothing to paste, nothing to open. Mail, Slack, Notes, Word, Pages, browser fields — everywhere a cursor blinks.
TidyWrite
Native macOS · Currently in alphaWrite flawless English
Write flawless English
everywhere on your Mac.
TidyWrite quietly lives in your menu bar and corrects spelling, grammar and tone as you type — inside Mail, Slack, Notes, Word, Pages and your browser. No copy-paste. No switching windows.
Works in Mail · Notes · Slack · Word · Pages · Safari · Chrome — and more.
Browser extension and Windows coming soon.
Lives inside the apps you already use
MailNotesSlackWordPagesSafariChromeNotion
What it does
A writing assistant that actually lives in your Mac.
No web editor. No browser tab. TidyWrite reads and fixes the text where you already write.
Catches what dictionaries can't.
Instant spelling the moment you stop typing, plus AI grammar and style for the subtle mistakes basic checkers miss.
Shift tone in a single click.
Formal, casual, friendly, professional, academic. Rewrite or paraphrase with a clear before / after preview.
How it worksInstall once. Forget it's there.
Install once. Forget it's there.
Write better forever.
TidyWrite uses Apple's Accessibility API to read the text field you're focused on — and only that. Nothing leaves your Mac unless an AI rewrite is requested.
- Step 01
Install & sign in
TidyWrite sits quietly in your menu bar — about 28MB, ready in seconds.
- Step 02
Just write
Colored underlines flag spelling, grammar and tone issues as you type, anywhere.
- Step 03
Click to fix
Accept a correction, rewrite the whole sentence, or change the tone with one click.
Every detail
Built like a native macOS app — because it is one.
Fast, private, and quiet. TidyWrite was engineered to feel like part of macOS itself.
More than spell-check
AI spots grammar and style errors a dictionary never could — passive voice, missing articles, awkward phrasing.
Fix in one click
Tap an underline → accept the suggestion. Done. No menus, no friction.
Rewrite & paraphrase
Turn rough drafts into polished writing instantly, with a clear before / after diff.
Five tones, one click
Formal · Casual · Friendly · Professional · Academic. Pick the room you're writing for.
Personal dictionary
Teach it your names, brands and slang — it stops flagging them, forever.
Stays out of your way
Underlines hide while you scroll. The menu bar icon is the only thing you'll see.
Privacy first
Your text is checked, not stored.
Built natively for macOS using Apple's Accessibility API. Spelling runs entirely on-device. Grammar and rewrite requests are encrypted in transit and never logged, sold, or used to train models.
Alpha access is limitedBe the first to write
Be the first to write
flawlessly on your Mac.
Join the waitlist and we'll send you an invite as soon as the next alpha batch opens.