# Grammarly

Grammarly is a grammar, spelling and style checker that works in browsers, desktop apps and phones, with a free tier and a paid Pro plan.

- Canonical page: https://kdp123.com/t/grammarly/
- Official site: https://www.grammarly.com
- Categories: Editing & Proofreading
- Price: Free tier, paid from $144/yr (Pro is $144/year ($12/month average); $60 per quarter or $30 billed monthly.)
- Platforms: web, windows, mac, chrome-extension, ios, android
- Outputs KDP-ready files: No
- Touches your KDP account: No
- Official Amazon product: No
- Last checked: 2026-11-09

## Summary

Grammarly flags spelling, grammar, clarity and tone issues as you write and can rewrite sentences, check for accidental plagiarism and generate text from prompts. It is built for general and business writing rather than fiction, is not a replacement for a human editor on a book manuscript, and is now part of Superhuman's software suite. Corrections and rewrites of your own text count as AI-assisted under KDP rules and need no disclosure, but text generated from prompts counts as AI-generated and must be disclosed.

## Pros

- Works almost everywhere you type
- Free tier covers basic spelling and grammar

## Cons

- Monthly billing costs more than twice the annual rate
- Tuned for business writing; fiction style suggestions can be off

## Alternatives

- [ProWritingAid](https://kdp123.com/t/prowritingaid/)
- [Hemingway Editor](https://kdp123.com/t/hemingway-editor/)
- [Editorial Freelancers Association](https://kdp123.com/t/editorial-freelancers-association/)

## Sources

- https://www.grammarly.com/plans
- https://help.superhuman.com/hc/en-us/articles/46242163049229-How-much-does-Grammarly-Pro-cost
- https://kdp.amazon.com/en_US/help/topic/G200672390