Best Grammar Checker
for Mac
Mac users deserve a grammar checker that fits seamlessly into their workflow — fast, private, and always available. Grambo is the native macOS grammar checker that runs entirely on your device.
Download Grambo for Mac — Free TrialmacOS 14+ · 7-day free trial · No credit card required
Why Most Grammar Checkers Fall Short on Mac
Most grammar checkers were built for the web or Windows first. Mac users end up with browser extensions, clunky interfaces, and tools that send every word you type to a remote server. That's a problem — for both your privacy and your focus.
-
Cloud-based tools send your data externally — every sentence you write is transmitted to a remote server, raising serious privacy concerns for professional and personal writing alike.
-
Interruptive UI breaks writing flow — popup overlays and browser extensions constantly pull you out of the context you're writing in, killing concentration.
-
Lack of native macOS experience — most tools are web apps wrapped in a shell, not built for macOS conventions, keyboard shortcuts, or system-level integration.
-
Internet dependency — if your connection drops, cloud-based grammar checkers simply stop working. Not ideal for travel, remote work, or secure environments.
Grambo: A Grammar Checker Built for Mac
Grambo is a native macOS application purpose-built for Mac users who value performance, privacy, and a clean writing experience. It runs AI grammar correction directly on your Mac — no cloud upload, no subscription to a data-hungry service.
Select text in any application, press ⌘ ⇧ G, and Grambo corrects your grammar instantly. That's the entire workflow — no browser extension, no copy-paste, no switching apps.
Key Features
Native macOS Integration
Built for Apple Silicon. Works system-wide across Mail, Messages, Notion, Chrome, Safari, Slack, and every other Mac app — with a single keyboard shortcut.
Offline AI Processing
Grammar correction runs on-device using local AI models. No internet connection required. Works at full speed even without Wi-Fi.
No Data Tracking
Your writing never leaves your Mac. Nothing is sent to our servers by default. Zero telemetry on your text content.
Fast and Lightweight
Grambo is lean by design. It doesn't run in your browser, hog memory, or slow down your Mac. Just fast, accurate grammar correction.
Who Uses Grambo on Mac
Grambo is the right grammar checker for Mac users across a wide range of use cases:
-
Writing emails — catch typos and grammatical errors before hitting send in Mail, Outlook, or your webmail client.
-
Technical documentation — improve clarity in README files, Confluence pages, Notion docs, and internal guides without exposing proprietary information to external services.
-
Coding comments and commit messages — developers can quickly clean up inline comments, docstrings, and PR descriptions without leaving their editor.
-
Social media and messaging — correct grammar in Slack messages, Twitter/X posts, WhatsApp, and Telegram before sending.
The Best Grammar Checker for Mac Is Offline
Download Grambo and try it free for 7 days. No credit card, no sign-up required. Works on macOS 14 and later with Apple Silicon.
Download Grambo for Mac