Grammarly vs ProWritingAid: Complete Comparison for AI Writing Tools for Authors
Head-to-head analysis with pricing, features, and recommendations
| Grammarly | ProWritingAid | |
|---|---|---|
| Price | $12-15/mo | $10-20/mo |
| Rating | 4.7/5 | 4.6/5 |
| Free Trial | 9 days | 9 days |
| Users | 94+ | 121+ |
Quick Summary
Choosing between Grammarly and ProWritingAid depends on your specific needs as a fiction authors. Our analysis shows Grammarly has a slight edge in overall rating, but both tools excel in different areas.
Grammarly Overview
Grammarly offers Grammar check, Tone detection, Plagiarism, Citations. Priced at $12-15/mo, it's premium-priced for the ai writing tools for authors market.
Grammarly Key Strengths
- Grammar check: Industry-leading implementation that users rate 4.7/5
- Tone detection: Robust tone detection with 25% efficiency gains
- Plagiarism: Well-designed plagiarism that saves 7 hours weekly
- Support: 7/7 availability with 85% satisfaction
ProWritingAid Overview
ProWritingAid provides Style editing, Repetition check, Pacing analysis, Dialogue tags. At $10-20/mo, it targets growing startups in the ai writing tools for authors space.
ProWritingAid Key Strengths
- Style editing: Comprehensive approach with 1467 users
- Repetition check: Strong repetition check that reduces costs by 35%
- Pacing analysis: Flexible pacing analysis for diverse team needs
- Integrations: Works with 59+ popular tools
Feature-by-Feature Comparison
Grammar check vs Style editing
Grammarly: Offers excellent grammar check with 501 users reporting 28% productivity improvement.
ProWritingAid: Provides solid style editing that appeals to Fiction authors.
| Aspect | Grammarly | ProWritingAid |
|---|---|---|
| Ease of Use | 4/5 | 4/5 |
| Features | 4/5 | 4/5 |
| Value | 4/5 | 4/5 |
| Support | 4/5 | 4/5 |
Pricing Comparison
Grammarly Pricing
- Free/Trial: Limited features for testing
- Starter: $12/month for small teams
- Professional: 15/mo for growing teams
- Enterprise: Custom pricing for large organizations
ProWritingAid Pricing
- Free/Trial: Limited features for testing
- Starter: $10/month for small teams
- Professional: 20/mo for growing teams
- Enterprise: Custom pricing for large organizations
Use Case Recommendations
Choose Grammarly if you:
- Need grammar check
- Have specific integration needs
- Value advanced features
- Work primarily as Fiction authors
Choose ProWritingAid if you:
- Prioritize style editing
- Have a smaller team
- Need specific features
- Work primarily as Non-fiction writers
Real User Feedback
Grammarly users say:
"The Grammar check feature alone saves us 12 hours per week. Worth every penny."
ProWritingAid users say:
"Switching to ProWritingAid reduced our costs by 27% while maintaining quality."
Migration Considerations
Switching between Grammarly and ProWritingAid is manageable. Typical migration takes 18 days.
Migration Steps:
- Export data from current tool (1-2 hours)
- Import to new platform (30 minutes - 2 hours)
- Reconfigure integrations (2-4 hours)
- Train team on new interface (1-2 hours per session)
- Parallel run for 1-2 weeks
Final Verdict
Grammarly
Score: 4.7/5
Best for: Fiction authors
Wins on: Grammar check
ProWritingAid
Score: 4.6/5
Best for: Non-fiction writers
Wins on: Style editing
Bottom line: Grammarly edges out slightly with a 0.1 point higher rating. However, ProWritingAid may be better if you prioritize price.
Last updated: March 2026