AI writing assistants (ai writing) , by Orpheus Technology Ltd. , since 2012
ProWritingAid
Deep-dive grammar and style reports built for long-form authors and editors
- WEB
- DESKTOP
- EXTENSION
- PLUGIN
- API
What ProWritingAid does
Grammar/style checker aimed at authors and long-form writers, offering 25+ analysis reports (style, pacing, overused words, etc.), a rephraser, and manuscript-level tools like chapter critiques and author workshops on higher tiers.
What you get: 25+ style/grammar reports, Rephraser, Chapter critiques, Author workshops, API for integrations.
Typical jobs: Novel/manuscript editing; Style and readability analysis; Editor/agency workflows.
What users complain about: The desktop app is reported as 'excruciatingly slow at times' when clicking reports, with delays even on small documents (User reviews (r/selfpublish, r/writing))
Pricing and plan limits
Verified August 2026| Plan | Monthly | Annual (per mo) | Limits |
|---|---|---|---|
| Free | Free | Free | 500-word check limit, 2 report runs/day, 10 rephrases/day, 3 sparks/day |
| Premium | $30 | $120 | Unlimited word count and rephrases, 5 sparks/day, 1 chapter critique/day; lifetime option €399 |
| Premium Pro | $36 | $144 | Unlimited word count and rephrases, 50 sparks/day, 3 chapter critiques/day; lifetime option €699 |
Where it wins
- 25+ in-depth writing analysis reports (style, readability, overused words, etc.) beyond basic grammar
- Offers a lifetime license (€399/€699) unlike most subscription-only rivals
- Includes live author/editor workshops on the Premium Pro tier
Where it falls short
- Desktop app reported as 'excruciatingly slow at times' when running full reports, even on small documents
- Guidance recommends keeping chapters under ~10,000 words for reports to perform well, limiting full-manuscript use
- Free plan capped at 500 words per check and 2 report runs/day
How we scored it
Full methodology| Criterion | Weight | Score | Contribution |
|---|---|---|---|
| Capability | 30% | 7.5 | 2.25 |
| Value for money | 25% | 7.0 | 1.75 |
| Ease of use | 15% | 6.0 | 0.90 |
| Maturity | 15% | 8.0 | 1.20 |
| Support & docs | 10% | 7.0 | 0.70 |
| Momentum | 5% | 6.0 | 0.30 |
| Weighted total | 100% | 7.1 | 7.10 |
Alternatives to ProWritingAid
Chosen by editors, not sponsors
Similar tools in AI writing assistants (ai writing)
Grammar, tone, and full-sentence AI rewrites across browser, desktop, and Office/Docs
- WEB
- DESKTOP
- EXTENSION
- PLUGIN
- MOBILE
Brand-voice-controlled AI content and marketing-agent platform for teams
- WEB
- API
Multi-model AI chat and workflow platform for marketing and GTM teams
- WEB
- API