ProWritingAid vs Grammarly

Comprehensive side-by-side comparison — features, pricing, performance, and more.

Data last refreshed October 2026

ProWritingAid

Orpheus Technology

The Complete Toolkit for Storytellers

Freemium

76% verification coverage

Grammarly

Free AI Writing Assistance

Freemium

81% verification coverage

Trust & Reliability

ProWritingAid

Users:1M-10M

Customers (per vendor):Amazon, Boston University, Microsoft +1

GDPR

Grammarly

Users:10M-50M

Customers (per vendor):Databricks, Indeed, Zoom +4

GDPR

SOC 2

HIPAA

Overall Winner: Grammarly

6.8/10 vs ProWritingAid at 4.8/10

Leads in:

Performance

Compliance & Data Protection

Customization

Scores are AI-estimated from publicly available data — not an independent test or a verified user rating. How we rank →

AI Comparison Summary

ProWritingAid

4.8

avg score

Grammarly

6.8

avg score

Grammarly leads overall — particularly in Customization and Support and 2 more.

Based on 6 dimensions

Scores are AI-estimated from publicly available data — not an independent test or a verified user rating. How we rank →

Overall Winner

Grammarly

6.8 / 10

ProWritingAid

Best For

Creative writers planning and editing novels

Business writers improving clarity and consistency

Students enhancing academic writing

Authors preparing for self-publication or traditional publishing

Grammarly

Best For

Individuals seeking mistake-free writing

Teams and businesses aiming for consistent, on-brand communication

Students and institutions needing writing assistance and plagiarism checks

Marketing teams creating clear and convincing content

* Verdict is based on our algorithmic scoring of publicly available data. Learn about our methodology

ProWritingAid is best for

✍️Writing & Content4.2🤖Automation & Agents4.0🔍Research4.0

Grammarly is best for

🤖Automation & Agents5.5🔍Research5.5✍️Writing & Content5.3

Filter by your use case:

Limitations

ProWritingAid

Cons

Currently only available in English
Refunds not possible for monthly paid plans
Story Credits are nonrefundable
Free account limited to 500 words at a time
Free account limited to 2 runs per line editing report per day
Free account limited to 10 Rephrases per day
Free account limited to 3 Sparks per day
Free account limited to 3 Creative Nudges per day

Grammarly

Cons

Enterprise features like SSO and data loss prevention are only available on the highest tier
Advanced AI prompts are limited on the Free and Pro plans
Requires explicit permission to record typed or copied input for some features
Grammarly cannot access sensitive fields like passwords and payment information on a best-efforts basis

Weighted Score — Adjust What Matters to You

Pick a profile or drag sliders — scores and radar update instantly on the right.

Quick profiles:

Ease of Use5

Customization5

Support5

Integration5

Compliance & Data Protection5

Performance5

Planning Quality5

Dimension Comparison

ProWritingAid

4.8

/ 10

Grammarly

6.8

/ 10

Clear winner

Dimension Breakdown

Ease of Use

How intuitive is onboarding, UI navigation, and day-to-day usage for the target audience?

ProWritingAid

8.0

Grammarly

8.0

Customization

Calculated

How much can users tailor workflows, settings, prompts, or outputs to their needs?

ProWritingAid

3.0

Grammarly

6.0▲ +3.0

Support

How strong is the documentation, customer support, community, and learning resources?

ProWritingAid

4.0

Grammarly

6.0▲ +2.0

Integration

Calculated

How well does it connect with other tools, APIs, and workflows?

ProWritingAid

5.0

Grammarly

6.0▲ +1.0

Compliance & Data Protection

Calculated

Compliance certifications and data-protection posture, counted from ten verified signals: SOC 2 Type II, GDPR compliance, HIPAA, WCAG AA/AAA, PII redaction, licensed-only training, a published sub-processor list, a downloadable DPA, not training on user data, and a documented deletion path

ProWritingAid

4.0

Grammarly

7.0▲ +3.0

Performance

Calculated

Latency + throughput speed

ProWritingAid

5.0

Grammarly

8.0▲ +3.0

Planning Quality

Calculated

Multi-step planning depth + replanning capability

ProWritingAid

—

Grammarly

—

Calculated = derived from structured signals (integration count, API/open-source config, compliance certs, response-time). AI = LLM-assessed from public website content. Methodology

Task Performance

ProWritingAid

Task

Grammarly

4.0

Blog Writing

4.0

2.0

Article Generation

4.0

2.0

Seo Optimization

2.0

Content Research

5.0

3.0

Headline Creation

4.0

3.0

Content Repurposing

6.0

Tone Adaptation

9.0

3.0

Multi Format Output

4.0

5.0

Collaboration Workflow

7.0

4.0

Template Library

5.0

6.0

Text Summarization

6.0

3.0

Language Translation

7.0

* Task scores (1–10) are algorithmically generated from publicly available data.

Data is sourced from public information and vendor websites. It may not always be up-to-date — verify pricing and features directly with the vendor before purchasing.Report inaccuracy

Frequently Asked Questions

What are the main differences between ProWritingAid and Grammarly?

ProWritingAid — "The Complete Toolkit for Storytellers". Grammarly — "Free AI Writing Assistance". The Features section on this page compares them side by side.

Who is ProWritingAid best for compared with Grammarly?

ProWritingAid is best for Creative writers planning and editing novels; and for Business writers improving clarity and consistency. Grammarly is best for Individuals seeking mistake-free writing; and for Teams and businesses aiming for consistent, on-brand communication.

How does the pricing of ProWritingAid compare with Grammarly?

ProWritingAid is freemium, includes a free plan, paid plans start at $12/month. Grammarly is freemium, includes a free plan, offers a free trial. Always verify current pricing with the vendor.

Does ProWritingAid or Grammarly have a free plan?

ProWritingAid has a free plan. Grammarly has a free plan and offers a free trial. Always verify current pricing with the vendor.

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