Grambo vs Grammarly
A detailed, honest comparison of Grambo and Grammarly — covering offline support, privacy, native Mac experience, and pricing. Updated 2026.
Feature Comparison
| Feature | Grambo | Grammarly |
|---|---|---|
| Offline Mode | Yes — full offline | No — requires internet |
| Privacy | High — local processing | Moderate — cloud based |
| Native macOS App | Yes — built for Mac | Limited — browser ext + wrapper |
| Data Sent to Servers | No (offline mode) | Yes — always |
| AI Training on Your Text | Never | Optional opt-out |
| Works Without Wi-Fi | Yes | No |
| Works Across All Mac Apps | Yes — system-wide shortcut | Browser + limited desktop apps |
| Bring Your Own API Key | Yes | No |
| Starting Price | $2.99/mo or $14.99 lifetime | ~$12/mo (Premium) |
| Free Trial | 7 days, no card required | Free tier (limited features) |
| 90+ Language Support | Yes | Limited |
| Apple Silicon Optimized | Yes — M1/M2/M3 native | No |
Key Differences Explained
1. Privacy & Data Handling
The most meaningful difference between Grambo and Grammarly is in how they handle your text. Grammarly processes all grammar corrections on their servers — every sentence you write and submit passes through their infrastructure. Grambo's offline mode runs entirely on your device, so your text never leaves your Mac.
For professionals handling confidential documents, this is a critical distinction. Grambo is the only grammar checker that is architecturally private — not just policy-private.
2. Offline Availability
Grammarly requires an active internet connection to function. Grambo works completely offline using local AI models (Llama 3.2, Qwen 3) that run natively on Apple Silicon. Whether you're on a plane, in a secure environment, or simply offline, Grambo continues to work at full speed.
3. Native macOS Experience
Grammarly's Mac experience is delivered through a browser extension and a desktop app that is essentially a web wrapper. Grambo is a native macOS application that integrates at the system level — one keyboard shortcut works in every app on your Mac, including ones where browser extensions can't reach.
4. Pricing
Grammarly Premium costs approximately $12/month when billed annually. Grambo costs $2.99/month, or $14.99 for a lifetime license — a significant difference for users who primarily need offline/private grammar correction on Mac.
When to Choose Grambo vs Grammarly
Grambo is the better choice when:
- You need offline grammar correction
- Privacy is a priority (legal, medical, corporate)
- You primarily write on a Mac
- You want system-wide grammar checking (not just browsers)
- You want a lifetime purchase option
- You prefer local AI over cloud processing
- You work in regulated industries
Grammarly may be better when:
- You write primarily in a web browser
- You need cross-platform support (Windows + Mac + mobile)
- You rely on Grammarly's tone and engagement scores
- Your workflow is browser-centric
- Offline usage is not a concern
Try Grambo Free for 7 Days
Download Grambo and see for yourself how offline, private grammar correction compares on your Mac. No credit card required.
Download Grambo for Mac