Grammarly Review

Our Grammarly review

Our verdict

Grammarly is the default choice for checking and polishing writing. It sits inside your browser and apps and catches errors as you type, and its free plan is real enough to use every day. The paid Pro plan adds a much larger AI allowance and fuller rewrites. The recurring complaints are about billing and about AI suggestions that can sound generic or change your meaning, so treat the suggestions as prompts to think about, not orders.

Our 4.3 out of 5 score is an editorial judgment based on features, pricing and user feedback. It loses points for the renewal complaints and the polarising AI rewrite layer.

What it does

Grammarly checks spelling, grammar, punctuation, clarity and tone in your browser, in Word and Google Docs, and in apps such as Outlook and Slack. Its generative AI can draft, rewrite and summarise text. Pro adds plagiarism and AI-text detection, style guides and brand tones for teams. Grammarly’s parent company renamed itself Superhuman in October 2025, but the writing product is still called Grammarly.

What users say

G2 shows about 4.7 out of 5 across more than 11,000 reviews, with reviewers praising the real-time corrections and how widely it works. Trustpilot is more mixed, with more than 10,000 reviews and an average that differs between snapshots, roughly 3.5 to 4.1.

The complaints are consistent. Reviewers report unexpected charges, automatic renewals and trouble cancelling. Others find the upgrade pop-ups intrusive, say suggestions can be wrong or change the meaning of a sentence, and say the AI rewrites flatten their voice. Some students report confusing AI-detection scores on text they wrote themselves.

In March 2026 Grammarly withdrew an “Expert Review” feature after criticism that it attributed advice to real authors without their permission. The company announced the withdrawal on the same day a federal class-action lawsuit was filed.

Pricing

The Free plan costs nothing and includes core checks and about 100 AI prompts a month. Pro costs $12 a month billed annually ($144 a year), or $30 a month on monthly billing, with about 2,000 AI prompts a month. A Business tier in the Superhuman suite is listed at $33 a month billed annually, and it adds email software, not better writing help. The older “Premium” plan is now called Pro. For details, student discounts and billing tips, read our Grammarly pricing guide.

Where it falls short

It’s built for English-language editing, not for generating long drafts, and its AI rewrite layer can feel over-eager. The billing and cancellation complaints are worth planning around: set a reminder before renewal.

Who should use it

Choose Grammarly if you write a lot and want an editing layer in every app. Skip it if you mainly need to reword or summarise text cheaply (QuillBot) or to draft from scratch (ChatGPT). Compare Grammarly vs QuillBot or see our list of the best AI writing tools.

How we reviewed this tool

This review is based on Grammarly’s pricing information, G2 and Trustpilot reviews and independent write-ups (checked November 2, 2026). We have not run our own trials.