Comparison
SwiftPen vs Grammarly
Grammarly is useful for broad writing help. SwiftPen is designed for the Mac workflow where you want to improve selected text instantly, in place, and with more privacy control.
Quick answer
Grammarly is better if you want an always-on writing assistant inside a browser-based or document workflow. SwiftPen is better if you want a Mac-native utility that only acts when you explicitly select text and press a shortcut.
SwiftPen strengths
- Native macOS workflow
- Selection-first and preview-first
- Local model support
- Custom rewrite modes
Grammarly strengths
- Broader grammar and style coverage
- Always-on assistance in some environments
- Familiar brand for many users
- Useful for document-level editing
Best fit
Choose SwiftPen if your biggest pain is interruption. Choose Grammarly if your biggest pain is broad editing inside longer documents.
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