Side by side
CoWriter AI vs RewriteBar
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
AI-powered writing assistant for smarter, faster content
Rewrite. Refine. Accelerate. — AI productivity for every macOS app. 🚀
Primary task
Writing
Writing
Pricing
Freemium · Free + from $20/mo
Free Trial · Trial; then from $29
Pricing details
Free + from $20/mo
Free + from $29
Billing cycle
Monthly
One-time
API access
Not documented
Listed as available
Platforms
Web
Web, macOS
Integrations
Not documented
Slack
Source rating
2.4 / 5 · 7 ratings
4.8 / 5 · 6 ratings
Catalog views
10k
39k
Estimated monthly traffic
—
—
Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
- Citation formatting aid
- Supports APA, MLA, IEEE, Harvard styles
- Bibliography library
- Adaptable writing styles and tones
- Document structuring with Outline Builder
- Fixes grammar and spelling errors instantly
- Works offline with local models like Ollama or LM Studio
- Works across all macOS applications — Mail, Slack, Notion, VS Code, Figma, etc.
- Lightweight (≈20MB), optimized for Apple Silicon
- Custom AI actions and reusable templates for advanced workflows
Listed limitations
- Limited Collaboration (up to 5 users)
- No customizable citation styles
- No multilingual support
- No auto-correct feature
- Repetition of certain features
- macOS only — not available for Windows or web yet
- Learning curve for creating custom AI actions (advanced users benefit most)
- No built-in voice or speech input support (text only)
- Requires macOS Ventura (13.0) or newer
- Needs macOS accessibility permissions to function across apps