AI Grammar Checker for Mac
Native, Private, and Smart
NotchTutor is built for Mac from the ground up — not a browser extension ported to desktop. System-wide grammar checking that explains every fix, tracks your patterns, and keeps your writing completely private.
Download Free for MacWhat "native Mac app" actually means for grammar checking
Most grammar tools are web apps with a desktop shortcut. NotchTutor is different — it integrates at the operating system level for an experience that browser-based tools simply can't match.
Works in every app, not just browsers
Mail.app, Pages, TextEdit, Notion, Slack, VS Code, Notes — NotchTutor checks your grammar wherever you type on your Mac, with no extensions, no switching tabs, no copy-pasting.
Private by design
Your writing is never stored or used to train models. No account is required, no usage is tracked, and corrections are returned straight to your Mac without being retained.
Lives in the notch bar
On MacBook Pros with the display notch, NotchTutor tucks into the notch bar — always accessible, never in the way. Trigger a grammar check without leaving your current window.
Lightweight and fast
A native app uses Mac system resources efficiently. No Electron overhead, no background web processes. NotchTutor starts instantly and runs without noticeable impact on battery or performance.
Your writing is never stored. Full stop.
Most AI grammar tools store your writing or use it to train their models. NotchTutor does not. Corrections are generated and returned to your Mac — no storage, no accounts, no tracking.
No data storage or retention
Your drafts, emails, and documents are never stored or retained. Corrections are generated via OpenAI's API and returned to your Mac immediately.
No account required
Download, install, and use NotchTutor without creating an account or providing any personal information.
No usage tracking
NotchTutor does not monitor what you write, how often you write, or what suggestions you accept.
Privacy matters most when writing matters most. See how we help with professional grammar checking for client communications and confidential work. Also read about why writers repeat the same mistakes .
AI grammar intelligence, not just autocorrect
NotchTutor's AI catches what spellcheck misses and goes further than rule-based grammar checkers.
Grammar & structure
Vocabulary & word choice
Professional tone
Learn about the most impactful errors: Common grammar mistakes professionals make and how to fix them permanently. Also explore our guide on learning from grammar mistakes .
Frequently asked questions
What makes NotchTutor a native Mac grammar checker?
NotchTutor is built as a native macOS app — not a browser extension or web wrapper. It integrates with the operating system directly, working inside Mail, Pages, Notion, Slack, and any other app on your Mac. This means no copy-pasting and no tab-switching: grammar help appears right where you're writing.
Does NotchTutor work in Safari and Chrome on Mac?
Yes. As a system-wide Mac app, NotchTutor operates inside browser text fields too — Google Docs, web-based email clients, CMS editors, and more. No browser extension required.
Is NotchTutor free for Mac?
Yes. NotchTutor is free to download and use on macOS. The core features — real-time grammar checking, explanations, and mistake pattern tracking — are all available at no cost.
Does NotchTutor send my text to the cloud?
Corrections are generated via OpenAI's API and returned to your Mac. Your writing is never stored, and NotchTutor never uses it to train models. No account is required and no usage is tracked.
Which macOS versions does NotchTutor support?
NotchTutor supports macOS Ventura and later, including Sonoma and Sequoia. The notch bar integration is available on Macs with the notch display (MacBook Pro 14" and 16" from 2021 onwards, and MacBook Pro 14" M4 and later).
How is a native Mac grammar checker different from Grammarly's Mac app?
Grammarly's macOS app uses a keyboard extension that covers browsers and some native apps, but requires an account and uses your data for product improvement. NotchTutor is a fully native Mac app — no account, no tracking, and your writing is never stored.
The grammar checker your Mac deserves
Native macOS. Private by design. Free. Download NotchTutor and experience grammar checking built for the platform you actually use.
Download Free for Mac