What is Grammarly?

"Grammarly reviews writing in real time, correcting over 250 common grammatical errors and contextual spelling mistakes. It detects more than 10x the grammar inaccuracies of any word processing software. "

Improved grammar makes for improved writing; Grammarly’s promise is to help you convey what you mean, mistake-free.

With more than 4-million certified users and 350 licensed businesses and universities, Grammarly is a trusted writing-assist software, designed to strengthen your vocabulary usage, check over 250 grammatical errors, and detect the erroneous use of words and phrases.

Grammarly premium goes even further, ‘supercharging’ your writing skills with 150+ additional grammar rule checks, plagiarism tests, and citation suggestions.

Grammarly scored 86/100 in the Productivity Tools category. This is based on user satisfaction (81/100), expert reviews (80/100), press buzz (60/100), and other relevant information on Grammarly gathered from around the web.

The score for this service has improved over the past month. What is this?

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Grammarly Review

Editors' Review by the Productivity Tools Software Review Team

Each week we feature an app that has caught our or the Crozdesk community’s attention. We look for exciting features that make our lives easier, apps that take a radical approach to existing problems or a service that has everyone talking about it. In other words: Apps that we think you should know about.

This week’s featured app is Grammarly – a browser extension and web app, that helps you improve your writing skills by reducing your grammar and spelling mistakes. The integrated service and app Grammarly has seen an amazing growth since its foundation 7 years ago, and today it claims to be “the world’s leading automated proofreader” winning multiple awards in the tech industry!

Your writing skills matter to you?

Whether you are a content producer, blogger, marketer or are just keen on using proper grammar and spelling in all your email communications, Grammarly is a tool you should consider.

The functionality and seamless integration into important online services allow for a smooth correction process. The downsides of the app are limited and don’t impact productivity to a great extent.

Installation and Sign up Process

The first thing you will want to do when using Grammarly is install their plugin for your browser. Since Chrome is the most widespread browser used nowadays, this review is based on the Grammarly Chrome extension.

After installing the extension (and a restart, Chrome Version 47.0.2499.1 Canary) I was able to log in, using the review credentials Grammarly has provided us with, that do include premium features so we could test them.

But don’t worry, if you don’t have an account yet: The sign up process is as simple as it can get. Open the app, click the big sign up button and you should be good to go in a few seconds. No form filling skills required here. After you have signed up there is no additional login required so you can start straight away. So let’s get crackin’!


Grammarly comes in two flavours: The integrated pop-up in the services/domains that Grammarly already works with and a dedicated web app where you can upload and create documents, change your account details, etc. Both are easy to use, and I had no problems finding my way around (for there is little to fumble around with).

Grammarly should work on every website except the following:

  • grammarly.com – and subdomains, but you would use the app here anyways
  • app.asana.com
  • hootsuite.com
  • plus.google.com
  • chrome.google.com
  • facebook.com – the extension is disabled in the chat fields
  • onedrive.live.com
  • docs.com
  • sp.docs.com
  • docs.google.com
  • jsbin.com
  • jsfiddle.net
  • quora.com
  • mail.live.com

Integrated overlay

Using Grammarly in Gmail or Facebook is pretty easy and well designed. Grammarly shows a summary number of the errors it found throughout your text and categorises them into two sections: critical and advanced issues. Correcting advanced issues does require a premium license, though. Critical errors can be corrected in the popup that allows you to work through your text, check the reasoning behind each error and receive suggestions on how to edit it – ranked by priority and criticalness.

No confusing buttons, functions or popups that you have to dismiss. Most corrections can be implemented by clicking on the suggestions so you don’t have to do much manual labour.

Web app

The web app is as simple as the pop-up. The icons and navigation panel are designed in a clear and concise way with good contrast and an intuitive layout. The top search bar allows you to search within documents and titles so you can easily look up past texts you have corrected. When editing texts, you can enable/disable separate functions to adjust the app to your needs. If, for example, you are writing a case study with quotes, just adjust your text type to “Case study” in the document type menu and disable the plagiarism function to avoid being spammed with notifications.


Grammarly offers an individual premium plan that you can subscribe to on a monthly ($29.95), quarterly ($59.95) or annual ($139.95) basis. With access to the premium features, you can edited advanced issues, and do over 250 new, premium checks on a wide range of premium-only document types like student essays, business reports, and novels.

Other licensing options are available for enterprises or educational and governmental institutions.

The Crash Test: How does it perform?

Disclaimer: As experts in the SaaS industry we do our fair share of content creation and lots of online reading. However, we do not qualify as professional proofreaders or have the qualifications of a language expert. The writer of this article is not a native speaker. Please consider this when reading the next paragraph. Feel free to comment and show further errors that are not covered in the comment section and we will be happy to implement them and check with Grammarly.

Now, obviously the competence and detection skills of a writing correction app are an important factor.

I tested Grammarly using the following dummy email to my co-worker Stéphane for our Crozdesk page. This is our testing paragraph:

Hi Stéphane, thank you to intro ducing my to Grammarly. Your a really, really cool collegue! But lets see how much of my mistakse grammarly was able to found. The test Im writing has a few errors and grammatical issue to found.

There are a total of 11 critical errors (+/- 1 depending on how you count) and a few wording mistakes, nothing too complex and something everyone should be able to grasp. Here is the corrected paragraph (spelling is highlighted in orange, grammar in red, wording in blue):

Hi Stéphane, thank you for introducing me to Grammarly. You’re a really, really cool colleague! But let’s see how many of my mistakes Grammarly is able to find. The text I’m writing includes a few errors and grammatical issues that can be found.

The following screenshot shows the Grammarly pop-up in Gmail without corrections:

Grammarly Review Google Mail plugin before corrections

This is what the text looks like after applying all suggested corrections in the right order:

Grammarly Review Google Mail plugin after corrections

Here is the text in clear writing:

Hi Stéphane, thank you for introducing me to Grammarly. You’re a cool colleague! But let’s see how much of my mistakes Grammarly was able to found. The test I’m writing has a few errors and grammatical issue to found.

Let’s run through the mistakes Grammarly was not able to identify:

  • “But let’s see how much of my mistakes Grammarly was able to found.” – Two mistakes still in this sentence (wrong determiner and tense construction): […] see how many of my mistakes Grammarly is able to find.
  • “The test I’m writing has a few errors and grammatical issue to found” – Two or three mistakes here (wording, plural and sentence construction): The text I’m writing includes a few errors and grammatical issues to be found. Better: The text I’m writing includes a few errors and grammatical issues that can be found.

Though the tense errors should be fairly obvious to detect and in other instances the app does perform better on this skill set, they were not highlighted in the test. The word swap “text” for “test” is due to the context of the paragraph as one and could be excused. What Grammarly still needs to work on is the recognition of missing plurals (here: the word “issue” in the last sentence). The app also didn’t suggest adding the preposition “a” to correct for the singularity of the noun nor added the “s” to account for the plural, but all in all it caught most mistakes.


  • Formatting
    Though this is a well established working guideline when you are used to writing, new bloggers and content creators might find that a bit confusing: If you want to use the online App, it will remove all formatting and hyperlinks from your text when you just paste the text from a different application. If you want to keep your formatting use the upload/download function. Applies only to the web app, not the plugin!
  • Readability
    In my case, Grammarly used a serif font in a web browser window to display the web app text. Depending on the screen resolution you use to view the app, this might be a little hard to read, especially when you have set a custom zoom to your window. Applies only to the web app, not the plugin!
  • Reliability
    As seen in the competence section of this review, the algorithm does not detect all the errors that are hidden in a text – including some simple ones.


  • Accessible and integrated
    No matter where you work: in Gmail, Facebook, Twitter, your blog or an offline document: Grammarly has your back, offering instant corrections and text analysis.
  • Better corrections than other apps
    What makes Grammarly better than the rest is the combination of a very high accuracy in finding mistakes, and it’s large community to help you figure out the more tricky ones, when it comes to intention and meaning of your text.

Stop worrying about your spelling mistakes and start being productive – Check out their profile on Crozdesk and get started with Grammarly today!

Grammarly is available as a Chrome, Safari and Firefox browser extension, to work with your online tools, and as a Word® and Outlook®  add-on. They even have Mac plugin in the pipeline. Though Grammarly does not support Google Docs yet, Affiliate Marketing Associate Galyna Kovalenko told us that they are currently looking into that.

  • Grammarly
  • Grammarly
  • Grammarly

Productivity Tools Market Radar

Grammarly Product Overview

  • Grammar checker: Grammarly scans your writing in realtime, checking the appropriate use of some 250 advanced grammar rules.

  • Context checker: It’s common for us to spell words correctly, but place them in the wrong context. Grammarly detects the erroneous use of words such as effect/affect, they’re/their/there, and many other frequently muddled words.

  • Vocabulary enhancement: Grammarly suggests words that can enhance the context of your written document. Help your words make an impact, not a crash.

  • More than 4-million trusted users: Users range anywhere from bloggers to business professionals, but in general, Grammarly's designed for anyone who wants to write better.

Languages: English

Grammarly User Reviews

Average User Rating:
4.04/5 based on 646 user ratings.
Your Rating:
User profile picture

Best Grammar Tool

What do you like about Grammarly?

with Grammarly, you can write an article without any grammatical error, and it can be installed in a browser.

What do you dislike about Grammarly?

the environment is not easy to navigate, making it stressful when using it offline.

What have you been using it for and what problems did Grammarly solve?

I have been using Grammarly to check my blog post for grammatical error offline and for plagiarism online.

Ease of use
Value for money
Customer service
User profile picture

Grammarly - a very helpful editing tool

// Instructional Technology Facilitator at Greenville County Schools

What do you like about Grammarly?

From the start, I want to be clear that I use the free version. I have yet to make the dive and purchase a yearly subscription. So this review is contingent on that. Here's what I like:
- With regards to free platforms, Grammarly seems to be the best option out there fore catching errors, offering corrections, misspelled words, etc. I haven't found a better free option that offers this level of support.
- It works smoothly with any typing I need to do on webpages (I use the Chrome extension). I do not have to press start or initiate anything, it just quietly kicks in and begins offering assistance when needed. It's easy to start using.
- I feel like it's corrections are right on - highly appropriate and accurate. In the past, I've noticed that I disagreed from time to time with recommendations offered by other tools, but Grammarly is good stuff!
- It has a nice, simple feel. It's not overwhelming (like a red ink pen from a grammar teacher). It just offers a simple explanation.
- I do know that the subscription offers much more - noticed inconsistent writing styles, unclear sentence structure, wordiness, and even picks on language that may come across as impolite.
- You have the opportunity to build a personal dictionary. If you use a word commonly that it does not recognize, you can add that word to the dictionary to avoid future notifications.

What do you dislike about Grammarly?

- Bear in mind that it's probably not best for first-time English users. I'm thinking Grammarly would work best with user who are already familiar with the English language.
- The monthly subscription just seems a bit pricey to me.
- It does not work with Google (yet, but maybe one day).

What have you been using it for and what problems did Grammarly solve?

I spend a lot of hours daily typing/writing something, somewhere. Grammarly quietly works in the background to ensure that what I've written is without error.

Ease of use
Value for money
Customer service
User profile picture

English proofreader

// Legal writer at Upwork

What do you like about Grammarly?

Grammarly allows you to write the English language in a professional way. It automatically suggests mistyped words or incorrect sentences

What do you dislike about Grammarly?

Sometimes, grammarly suggests words that aren't relevant or sentences that don't really worth changing.

Ease of use
Value for money
Customer service