Research candidate · editorial review pending
Grammarly
Grammarly offers proofreading and rewriting support with Free and Pro plans. The vendor restricts third-party model training on user content; this is not a blanket statement about every use of manuscript data.
Vendor: Grammarly (Superhuman)
Best fit
- Proofreading shorter author materials
- Clarifying promotional copy
- Considering alternative wording
Limitations
- Treating proofreading as developmental editing
- Assuming partner restrictions cover every data use
Documented strengths
- Includes a Free plan
- Provides proofreading and rewrite assistance
Things to check
- Pro pricing depends on billing cycle
- Full manuscript retention terms were not reviewed
Pricing and data
Pricing: Free $0; Pro $12/member/month billed annually or $30/member/month billed monthly.
Manuscript data policy: documented controls
Vendor API: Unknown · Vendor MCP: Unknown
Source check: 2026-09-27. Confirm changing facts with the vendor.
Evidence
- Proofreading, Free and Pro pricing, Superhuman relationship, and restrictions on third-party model training of user content. · Checked 2026-09-27