Was $39.99
🖤 Black Friday — Lifetime Deal
Pay once. Get Grambo for Mac forever. All future updates included. No subscription, no recurring charges.
🖤 Grab the Lifetime Deal⏰ Limited time only. This Black Friday pricing is available for a limited window. Once it ends, the price goes back up. Don't miss it.
What is Grambo for Mac?
Grambo is an AI-powered grammar and writing assistant built exclusively for macOS. It lives quietly in your menu bar and works system-wide — no copy-pasting into a browser tab, no extension, no switching apps. Select any text anywhere on your Mac, press a hotkey, and Grambo fixes it in place.
Unlike browser-based tools that upload everything you write to the cloud, Grambo is private by default. All AI processing runs locally on your Mac using Apple Silicon. Nothing leaves your device unless you actively choose to enable Grambo Cloud.
Why the Lifetime Deal is a No-Brainer
Subscriptions have become the default for software — but they're rarely the best deal for users. With Grambo's lifetime plan at $14.99, you're paying for the app once and owning it forever. No monthly charges silently eating away at your budget. No price increases. No "we're changing our pricing" emails.
The lifetime deal includes:
- Offline AI processing — full grammar correction without an internet connection
- Bring Your Own Key (BYOK) — use OpenAI, Anthropic, or Google API keys directly
- All grammar checking features — correction, spelling, punctuation, style, tone
- Custom prompts — create your own writing modes
- Works across all Mac apps — system-wide hotkey, no copy-pasting
- 90+ languages — not just English
- All future updates — every new feature, included
- Up to 3 devices — use on your Mac, MacBook, and Mac Mini
Grambo vs Grammarly — The Real Cost Comparison
Grammarly is the most well-known grammar tool, but it comes with significant trade-offs: everything you write passes through their cloud servers, there's no native macOS integration, and the Premium plan isn't cheap.
| Feature | Grambo (Lifetime) | Grammarly Premium |
|---|---|---|
| Price | $14.99 one-time | ~$144/year |
| Works offline | Yes — 100% on device | No — cloud only |
| Native Mac integration | System-wide hotkey, all apps | Browser extension only |
| Your text on their servers | Never (by default) | Always |
| Bring Your Own API Key | Yes — OpenAI, Anthropic, Gemini | No |
| Custom prompts / tone modes | Yes — unlimited | Limited presets only |
| 3-year total cost | $14.99 | ~$432 |
Over three years, Grammarly Premium costs roughly 29× more than Grambo's Black Friday lifetime deal.
How to Get the Black Friday Deal
- Go to the Grambo pricing page
Head to gramboapp.com/#price and scroll to the Lifetime plan. The Black Friday price of $14.99 is already applied — no coupon needed.
- Click "Get Lifetime Access"
You'll be taken to the checkout page. Payment is secure and processed instantly.
- Download Grambo for Mac
After purchase, download the app. Grambo requires macOS 15 or later and runs natively on Apple Silicon and Intel Macs.
- Activate your license
Open Grambo, go to Settings → License, and enter your license key from the purchase email. You're in — immediately.
- Start fixing your writing
Select any text in any app, press your hotkey (⌘⇧G by default), and Grambo corrects it in place. No browser tab, no copy-pasting, no interruption.
Black Friday FAQ
Is the lifetime deal really lifetime?
Yes. You pay once and get access to Grambo for Mac forever — including all future updates. This isn't a "lifetime of this version" deal. It's a genuine lifetime license.
Does the lifetime plan include Grambo Cloud?
Grambo Cloud is included with the Monthly plan. The Lifetime plan includes Offline AI and BYOK — meaning you can use any local AI model or bring your own OpenAI, Anthropic, or Gemini API key. Most power users prefer this setup for privacy and cost reasons.
What macOS version do I need?
Grambo requires macOS 15 (Sequoia) or later. It runs natively on both Apple Silicon (M1/M2/M3/M4) and Intel Macs.
When does the Black Friday deal end?
The Black Friday pricing is available for a limited time only. Once the sale period ends, the price returns to the standard rate. We recommend grabbing it now.
Can I try before I buy?
Yes. Grambo offers a 7-day free trial — no credit card required. Download the app, try it out, and if you love it, grab the lifetime deal before Black Friday ends.
🖤 Black Friday 2026 — Limited Time
Was $39.99
Grambo for Mac — Lifetime Deal. Pay once, write better forever.
🖤 Get the Lifetime Deal Now