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📝 Study and homework tools · ✍️ Writing help

Grammarly

By Superhuman (the company formerly called Grammarly). Visit Grammarly

Desk research from the maker's own pages. Not yet tried by us. Checked 2026-10-24.

A writing assistant that checks grammar, spelling, clarity and tone as you type in browsers, documents, email and a phone keyboard. It now also has an AI chat that drafts and rewrites text, an AI detector, a plagiarism checker, citation tools, an AI grader that estimates a grade against a syllabus, and a humanizer that makes AI-written text sound more natural. Teens mostly use it to clean up essays and messages. The company behind it now calls itself Superhuman.

Our take: Useful for teens 13+ who want cleaner writing and will use it as a checker, but parents of kids still learning to write should know how much of the writing it can do for them.

The facts
Ages it suitsabout 13-18 and adults (high school, college)
What its terms say about ageYou must be old enough to agree to share your data yourself, without a parent: at least 13 under most US law and 16 in the EU, or older where local law says so. (terms)
PriceFree, with paid extras. Free plan with 100 AI prompts a month; Pro is $12 a month on the web pricing page with 2,000 prompts (USD, Oct 2026). iPhone in-app plans cost more: $29.99 a month or $139.99 a year. Schools and businesses get quotes.
Works onWeb, iPhone and iPad, Android, Windows, Mac
AccountThe child's own account
AdsNone
In-app purchasesYes
The AI in itGenerative AI suggests corrections and rewrites, writes text from prompts, estimates grades and flags passages that look AI-written.

What's good

  • Works inside almost every app a teen writes in
  • Grammar explanations can teach patterns over time
  • Authorship feature records what was typed, pasted or AI-written
  • Free tier is useful on its own

Watch for

  • AI rewrites and a humanizer make it easy to pass off machine writing as your own
  • Your writing trains its AI unless you switch that off
  • Student pitch is to spot AI text before a professor does
  • Mobile subscription costs far more than the web price

Data and privacy

The privacy policy says it uses what people write to train its AI models unless the user turns off a training setting, and it shares identifiers with ad networks to market itself; it says it does not do that targeted advertising for anyone it knows is under 18. Read the privacy policy.

Does it work?

The maker's own claims only (it says 40 million people and 50,000 organizations use it). No independent study of the current AI product was found in this research.

In the Big Index

Alternatives to Grammarly

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    Claude

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    Curipod

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    Gemini Notebook (formerly NotebookLM)

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    A strong study aid for teens working from their own readings; younger children should use it only through a school account.

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    Imagine Forest

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    A handy free spark for reluctant young writers if a parent is fine with ads; families who want an ad-free, tracker-free space should look elsewhere.

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Where these facts come from

Prices, terms and features change. Nobody paid to be listed, nothing here is an affiliate link, and Peabody never rates itself. Where we and the maker disagree, the maker's own pages are the ones to trust.