Side by side
Potion vs RewriteBar
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Craft stylish emails with AI-powered ease.
Rewrite. Refine. Accelerate. — AI productivity for every macOS app. 🚀
Primary task
Email templates
Writing
Pricing
Free
Free Trial · Trial; then from $29
Pricing details
Free
Free + from $29
Billing cycle
Not documented
One-time
API access
Not documented
Listed as available
Platforms
Web
Web, macOS
Integrations
Outlook, Notion, Gmail
Slack
Source rating
3.0 / 5 · 1 ratings
4.8 / 5 · 6 ratings
Catalog views
1.3k
39k
Estimated monthly traffic
—
—
Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
- Notion-style interface
- Email building enhancement
- Usability
- No signup required
- No credit card required
- 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
- Lacks advanced customization options
- Potential privacy concerns
- No offline working mode
- Compatibility issues with less popular email clients
- Over-reliance on autocompletion
- 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