Grammarly: AI Writing and Grammar Checker App

Improve your writing with Grammarly's AI assistance. Get spell check, grammar check, generative AI, and more in one tool. Real-time suggestions for improving tone and clarity help ensure your writing makes the impression you want.

Grammarly: AI Writing and Grammar Checker App

Grammarly: AI Writing and Grammar Checker App is an advanced writing assistant that provides real-time suggestions, grammar checks, and generative AI features. Designed to improve your writing online, it analyzes sentences for spelling, grammar, punctuation, and clarity, helping you communicate effectively. Grammarly also includes auto-citations for students and works seamlessly across various platforms, making it a must-have tool for anyone who writes.

Add-on stats

Manifest V2
By: Grammarly
Daily users: 769,423
3.29K
Rating: 4.11
(3,110)
Version: 8.929.0 (Last updated: 2025-03-07)
Version code: 5899530
Creation date: 2014-12-17
Weekly download count: 3,206
Firefox on Android: No
Permissions:
  • http://*/*
  • https://*/*
  • tabs
  • notifications
  • cookies
  • storage
Size: 39.82M
Full description: See detailed description

Other platforms

Grammarly: AI Writing and Grammar Checker App (v14.1226.0)
48,000,000 4.51 (42,653)
Grammarly-AI Writing Assistant (v2.77.50891)
51,565,728 3.91 (244,616)

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Helpful built-in proofreader
  • AI assistance in writing
  • Enables better expression of ideas
Cons
  • Inconsistent functionality across different websites
  • Some controls and features are not working properly
  • Requires sign up for services
Most mentioned
  • Inconsistency in performance across different websites
  • Issues with specific features not functioning
  • Value of AI assistance in writing
User reviews
by GaMingo, 2025-02-23

by RSU, 2025-02-22

awesome
by Muhammad Muazz, 2025-02-21
View all user reviews

Add-on safety

Risk impact

Grammarly: AI Writing and Grammar Checker App requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • Critical ****** ****** ** ******* ***** ***** *** ** **** ** ***** **** ******** ****** *** ******** ********** * ******* ********
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  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Grammarly: AI Writing and Grammar Checker App. Use it at your own risk.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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