Grammarly review: worth paying for beyond spellcheck?

Use the free plan first. Pay only if you need the things Pro adds, and those are narrower than the marketing suggests.

What the plans page says

Grammarly's plans page (checked Nov 1, 2026) lists three tiers: Free, Pro and Enterprise. There is no Business tier on the page, though the FAQ still mentions one.

Free covers spelling and grammar checks, tone view and 100 AI prompts a month. Pro adds tone adjustment, full-sentence rewrites, inclusive language, citation consistency, AI-text and plagiarism detection, and 2,000 prompts a month. Priority support comes with it too.

The plagiarism check is therefore a Pro feature. Free doesn't have it.

The price problem

Read from Portugal, the plans page showed Pro at EUR 12 with a free trial and no stated billing period. Which period that is, the page didn't say. That is poor for a page whose job is to say what you pay.

Grammarly's separate Pro page prices in US dollars and does label the period: Pro is $12 a member a month billed annually, and 30 USD/mo when billed monthly. Yearly is the cheaper rate by a wide margin, so decide before you click through whether you'll still be writing in twelve months.

Annual pricing is the only version that makes sense for a student with a semester of essays. A one-month Pro for a thesis deadline costs the monthly rate, and you should set a cancellation reminder.

Where it works

The page lists a Docs editor, Windows and Mac desktop apps, browser extensions for Chrome, Safari, Firefox and Edge, MS Office, Google Docs, and apps for iPhone, iPad and Android. It doesn't say which platforms each plan includes, so check the free plan on the surface you actually write in.

Free competitors exist. LanguageTool is the one to check next, and we're comparing it in a separate piece. For students, see the AI writing roundup, and for how detectors misfire, what AI detectors measure.

Who gets value from Pro

Pro suits someone who writes in a second language, sends a lot of client email, or needs the plagiarism check. A native speaker writing short messages will do fine on Free, which already flags spelling and grammar.

One caution on the rewrites. A tool that rewrites full sentences changes your voice, and the page lists AI-text detection next to it. A student who accepts every rewrite may produce prose that a detector flags. That's a risk to weigh, not something the page claims.

Current plan figures are on the Grammarly product page, checked November 1, 2026. Browse alternatives in AI writing tools.