Grammarly and ProWritingAid are both AI writing assistants that go beyond basic spell-checking. Their philosophies differ fundamentally.
Target User
Grammarly is built for professionals writing in business contexts - emails, reports, Slack messages, LinkedIn posts. It integrates everywhere via a browser extension.
ProWritingAid is built for fiction writers, academics, and long-form content creators. Its analysis goes much deeper but requires more time to action.
Depth of Analysis
ProWritingAid wins decisively. It analyses 25 writing dimensions including sentence length variety, overused words, and dialogue tags. Grammarly's analysis is shallower but its generative AI can rewrite paragraphs in different tones.
Pricing
| Feature | Grammarly | ProWritingAid |
|---|---|---|
| Premium monthly | $30/month | $20/month |
| Premium annual | $12/month | $10/month |
| Lifetime licence | No | $399 one-time |
Verdict
Choose Grammarly for business/professional writing with smooth integration everywhere. Choose ProWritingAid for fiction writing or academic content - the lifetime licence is exceptional value.
