Comparison
FlowWrite vs Grammarly
Both are AI grammar checkers, but they take very different approaches on Mac. Here's how they compare in 2026.
Quick Verdict
Choose FlowWrite if you want grammar correction in every Mac app, care about privacy, and want a simpler, cheaper tool.
Choose Grammarly if you primarily write in browsers and Google Docs, want the most established brand, and need detailed writing feedback with tone detection.
Feature Comparison
| Feature | FlowWrite | Grammarly |
|---|---|---|
| Works in every Mac app | Partial | |
| Browser extension | ||
| Grammar correction | ||
| Translation | ||
| Text shortening & expanding | ||
| Tone detection | ||
| Plagiarism check | ||
| Multilingual | All major languages | English-focused |
| Privacy | Never stored | Stored on servers |
| Account required | No | Yes |
| Free tier | 10 corrections/day | Basic grammar only |
| Pro price | $2.99/month | $12/month (annual) |
| Speed | < 2 seconds | 2-5 seconds |
| Windows / Web |
System-Wide Support
This is the biggest difference. FlowWrite works in every Mac app — it runs as a menu bar utility and intercepts text selection system-wide. You can fix grammar in Mail, Slack, VS Code, Discord, Notes, Pages, terminal apps, and anything else.
Grammarly's Mac app has improved, but it still doesn't work everywhere. It's strongest in browsers (Chrome, Safari, Firefox) and has integrations with specific apps. But in many native Mac apps, you're out of luck.
Winner: FlowWrite
Privacy & Data Handling
FlowWrite sends your text to AI for correction and immediately discards it. Nothing is stored, logged, or used for training. There's no account, so there's no user data to collect.
Grammarly requires an account and processes text on their servers. Their privacy policy states that text may be used to improve their products. For sensitive writing (legal, medical, business), this matters.
Winner: FlowWrite
Pricing
FlowWrite offers a free tier with 10 corrections per day and all features unlocked — no credit card, no account. Pro is $2.99/month for 1,000 daily corrections.
Grammarly's free tier only covers basic grammar. Premium is $12/month billed annually ($144/year) or $30/month billed monthly.
Winner: FlowWrite ($96/year vs $144/year, with a more generous free tier)
Writing Features
Grammarly has more features overall — tone detection, plagiarism checking, GrammarlyGO AI assistant, and detailed explanations for each suggestion. It's a comprehensive writing platform.
FlowWrite is more focused — grammar correction, translation, style adjustment, shortening, and expanding. It does fewer things but does them instantly with zero friction.
Winner: Grammarly (for breadth of features)
Who Should Choose What?
Choose FlowWrite if you:
- Want grammar correction in every Mac app, not just browsers
- Care about privacy and don't want text stored anywhere
- Need multilingual support or translation
- Prefer a lightweight, fast, keyboard-driven workflow
- Don't want to create an account or manage a subscription
Choose Grammarly if you:
- Primarily write in browsers and Google Docs
- Need plagiarism detection
- Want detailed writing explanations and learning
- Need team collaboration features
- Also use Windows or need cross-platform support