Comparison
FlowWrite vs LanguageTool
Both support multiple languages and work on Mac. But they take fundamentally different approaches to grammar correction.
Quick Verdict
FlowWrite is better if you want system-wide grammar correction in every Mac app with a fast keyboard-driven workflow.
LanguageTool is better if you want open-source transparency, self-hosting, or grammar rules for 30+ less common languages.
Feature Comparison
| Feature | FlowWrite | LanguageTool |
|---|---|---|
| System-wide on Mac | Every app | Some apps |
| Languages | All major (AI-powered) | 30+ (rule-based + AI) |
| Translation | Any language pair | Not available |
| Open source | No | Yes (core engine) |
| Self-hosting | No | Yes |
| AI corrections | All tiers | Premium only |
| Writing modes | 5 modes | Grammar + style |
| Workflow | Select + Tab | Type → underline → click |
| Browser extension | No | Yes |
| Free tier | 10 corrections/day | Limited corrections |
| Pro price | $2.99/month | $5/month |
| Account required | No | Yes (premium) |
| Privacy | Never stored | Self-host option |
Where FlowWrite Wins
True System-Wide Support
FlowWrite works in every Mac application — Mail, Slack, VS Code, Discord, Notes, Chrome, Safari, Terminal, and everything else. LanguageTool's Mac app works in some applications, but many native Mac apps aren't supported.
Faster Workflow
FlowWrite's "select + Tab" approach is instant — select text and press one key. LanguageTool's traditional approach shows underlined errors that you click to fix one by one.
Built-in Translation
FlowWrite can translate between any language pair with the same workflow. LanguageTool doesn't offer translation.
More Writing Modes
Beyond grammar correction, FlowWrite offers translation, text shortening, expanding, and style adjustment.
Where LanguageTool Wins
Open Source & Self-Hosting
LanguageTool's core grammar engine is open source. You can run it on your own server for maximum privacy and control.
Broader Language Coverage
LanguageTool supports 30+ languages with dedicated grammar rules for each, including less common languages like Catalan, Galician, or Breton.
Browser Extension
LanguageTool has browser extensions for Chrome, Firefox, Safari, and Edge. FlowWrite works through macOS text selection instead.
Lower Price
LanguageTool Premium is $5/month — the most affordable premium grammar checker on the market.
Who Should Choose What?
Choose FlowWrite if you:
- Need grammar correction in every Mac app, not just browsers
- Want a fast, keyboard-driven workflow
- Need translation alongside grammar correction
- Don't want to create an account
Choose LanguageTool if you:
- Value open source and self-hosting
- Write in less common European languages
- Prefer browser-based inline corrections
- Want the lowest possible price
Try FlowWrite Free
Grammar correction in every Mac app. Select text, press Tab, done.
Download for macOS — Free