As a professional editor by trade, I know what a human editor can bring to the table.

However, I still use Grammarly on a regular basis to proofread whatever I post on this blog. I have a pretty good grasp on grammar and English rules already, but it’s surprising how typos and small errors can creep into anyone’s writing.

So what is Grammarly? Is it worth it? And can it replace a human proofreader or editor?

I answer these questions and more in my Grammarly review below.

This review is a big one as I wanted to be as comprehensive as I could. If you’re pressed for time, use the table of contents to skip to sections that interest you most.

Note: This article contains affiliate links which means we make a small commission if you end up signing up to Grammarly. However, this certainly didn’t stop me from sharing the good and the bad.

Grammarly overview

Ever posted anything online? Chances are you’ve come across Grammarly.

Garnering over 30 million daily active users, it’s the web’s favorite spell-checker and grammar editor.

Wondering what all the buzz is about? Let’s break down Grammarly’s magic:

In essence, Grammarly serves as your personal digital proofreader. It scans your text, rectifying any grammar, punctuation, and spelling mistakes with the free version.

Upgrade to premium, and you’ll receive added stylistic and best-practice writing suggestions.

In short, Grammarly is your tool for turning a rough draft into a refined and professional write-up.

Feature	What it does	The “extra” Grammarly touch
Grammar and Punctuation	It detects basic and advanced grammar and punctuation errors – alliteration, comma splices, run-on sentences, fragments, and much more.	If you’re not sure why a mistake is a mistake, no problem: Grammarly will tell you. It gives you a quick and easy-to-understand lesson.
Spell Check	It checks every word in your writing for spelling errors.	More comprehensive and robust than your average Microsoft Word spell checker, Grammarly’s spell check has first-class accuracy, perhaps the best available.
Plagiarism	It can scan your entire document for any cases of plagiarism, intentional or unintentional.	Not every case of plagiarism was done on purpose, which is why a tool like Grammarly is important to give your documents the full plagiarism rundown before you publish anything online.
Writing Style	It provides that “near human” touch by offering tips, suggestions, and advice on your writing style.	Perhaps the most underappreciated Grammarly feature. It gives you help with sentence-length, overall readability, and other actionable insights on improving your writing. If you want to become a better writer, this is exactly what you need.

No matter what kind of writing you might be doing – professional writing, casual writing, hobby writing – Grammarly can help you spruce up your emails, social media posts, blogs, and formal papers.

In saying that, I think the following people can benefit the most from using Grammarly:

1. Students
2. Content creators and copywriters
3. Authors
4. Bloggers
5. Freelancers and copy marketers
6. Business professionals
7. ESL students who want to improve their grammar in English

Do you even need a grammar checker?

Hear me out: I’m not the type of guy who goes around correcting people’s writing (unsolicited, of course).

But, as a seasoned editor, I understand how crucial clear and accurate writing is.

With today’s world full of emojis, internet lingo, and short content, you might think that good grammar is an old-fashioned concept. But, believe it or not, the difference between great grammar and bad grammar is huge.

Here’s why it matters:

1. Your message matters most: Whether it’s a blog post or a tweet, if your message isn’t clear, your audience might miss your point.
2. Your writing speaks for you: Your writing represents you. Why risk a negative image due to grammar mistakes that you can easily avoid?
3. There’s no downside: Using a grammar checker only makes your writing better. It doesn’t take much time, it helps you, and it makes sure you deliver your message just the way you want.

So, a good online grammar checker like Grammarly is a great tool for writers to make their work clear and free of errors. But remember, while Grammarly is really good, it’s not perfect.

In this Grammarly review, I’ll go into more detail about its pros and cons, and how to make the most out of using Grammarly.

The 3 reasons why I always recommend Grammarly

Let’s start with the pros, and why I always recommend Grammarly to my friends and family.

1. You don’t have to be a computer whiz

It might be 2019, but some people still twitch at the word “software” (there’s a reason why we’ve moved to the word “app”).

Most of us just don’t want to deal with anything extra, and would rather stick to what we already know instead of integrating something new into our routines.

I get it.

But Grammarly isn’t like most other software out there. As complex and advanced as Grammarly can be, it’s got an incredibly simple user interface and user experience. You could teach it to your grandparents and they’d be using it in an hour.

There are a few ways you can use Grammarly (which we explore more below), which include:

• The browser extension
• The Grammarly web tool
• The downloadable desktop app
• The Microsoft Word add-in
• The mobile app

A few clicks are all it takes to start using Grammarly, whether by pasting your text into its tool or letting it work in the background as you write. I’ve tested other online grammar checkers, including ProWritingAid and Ginger, and Grammarly is by far the easiest to use.

As an editor, recommending a tool that makes life easier for everyone, including myself, is a no-brainer.

2. Grammarly works

You’re reading my Grammarly review, so you probably want to know one thing above all else: does Grammarly work?

Yes, Grammarly absolutely works. It’s better at picking up spelling and grammar mistakes than any other checker.

At the end of the day, that’s its greatest selling point. Writing software has never been totally correct. Most software and apps will get most of the usual mistakes and errors, but anything more advanced and you’re on your own.

Grammarly has always gone the extra mile – no matter how advanced the mistake or suggestion, they’ve got you covered.

I wanted to understand why. What makes Grammarly different, and why is it more effective than other products I’ve tried?

Here are some interesting facts:

• Grammarly’s co-founders have been working on writing software since the late 90s, and they released their first software – Mydropbox – in 2002. In just 5 years, they had nearly a thousand universities signed up.
• They focused on creating a product that would benefit everyone. Both students and professionals with formal and academic writers, as well as casual, everyday writers with informal writing.
• They have an in-house team of deep learning engineers and computational linguists that are constantly at work tweaking their “good writing” algorithms by studying millions of pages from research databases.

The level of nuance that Grammarly can achieve is incredible, and perhaps my favorite part of using this tool.

(However, on a technical level, Grammarly is not perfect—as I explain further below. Some of its suggestions are wrong, which is why you need to pay attention and filter out the ones that are incorrect).

3. It teaches you everything you need to know

While all grammar checkers provide the obvious feature of highlighting your mistakes, Grammarly Premium goes the extra mile by actually teaching you why your mistakes are wrong.

For example, check out their explanation on sentence fragments:

This means that you not only ensure that your documents, emails, and posts are written with correct English grammar, but also that you will slowly and proactively improve your writing through Grammarly’s micro-lessons.

Here are just some of the common grammar and stylistic suggestions I’ve experienced with Grammarly:

• Best comma placement (avoid comma splices!)
• Word overuse
• Word redundancy (words like “really” and “actually” often add little to no meaning)
• Phrase and sentence structure
• Adverb overuse
• Ambiguous modifiers
• Confusion of lie/lay
• Incorrect or ambiguous pronouns
• Run-on sentences and wordiness
• Tautologies
• “Could of” instead of “could have”

If English is your second language or if you just want a nice daily lesson in grammar, there’s no better tool out there than Grammarly.

The 5 different ways to use Grammarly

You may be thinking: do I have to copy and paste everything I write into a text box for it to check my writing? Because that would be pretty annoying…

The answer is no. There are definitely more convenient ways to go about it.

Grammarly is an internet-based tool, so you need to be connected to the internet to use it.

However, there are various ways in which you can check your work, including:

1. The Grammarly web tool

The first option is to simply copy and paste your writing directly into the Grammarly web tool. To do this, click on ‘New’ in the dashboard and you will be presented with a blank page.

Copy your writing into the page and give the site a few seconds to work its magic. In just a few moments, the software reads, analyzes, and corrects your writing.

If you have a full and complete document, you can just upload it directly to the site. Simply click ‘Upload’ instead of ‘New’, choose a document from your computer, and Grammarly will analyze the content in the same way.

Alternatively, you can type directly into the Grammarly website, and the tool will check your writing as you go.

2. Desktop app

If you would prefer to check your writing via a desktop app, this is possible – as long as you use Windows or MacOS.

Simply download the app for your system by visiting the download page, follow the installation instructions and start using the tool in much the same way as the online version.

3. Microsoft Word

You can also use a Grammarly add-in directly within Microsoft Word. However, at the time of writing, this is only available if you are running Windows.

Visit the add-in page here and follow the instructions to add it to Word. Once up and running, the add-in will check your writing as you type.

This is how I generally use Grammarly. I found it seamless to install and it’s extremely intuitive to use. However, note that you do need to be connected to the internet while using it in Word.

4. Browser extension

One of the easiest ways to use Grammarly is via a browser extension.

There is a link on the homepage to this extension, or you can search for Grammarly in the Chrome Web Store.

Simply add the extension to Chrome as you would any other extension, and it will automatically check your writing when you use it on a number of websites.

This includes Gmail, providing you with assistance when you are typing an email, and even Google Docs for those of you who prefer Google’s word processor.

Here are a few of the other sites that you can use it on:

5. On your phone

Grammarly also has its own keyboard that you can use on your smartphone. This is available for both iOS and Android devices.

Once activated, the app will check your writing as you compose an email or text message. It is very useful if you want to catch those little mistakes that are so easy to make on phones, and it also has smart predictions to speed up your typing.

You can download the app at the Play Store or the App Store.

How much does Grammarly cost?

Is Grammarly free?

Yes, using Grammarly can be free.

One of the things I love about Grammarly is that you can use it without paying anything. The free version of Grammarly has no restrictions, meaning you can use it indefinitely without any limit or trial period.

And as I explain below, the free version of Grammarly is pretty good.

However, to unlock all of Grammarly’s features, you will need to upgrade to Grammarly Premium.

The current price for Grammarly Premium is:

• $12.00 a month when you pay annually ($144.00 in total)
• $20.00 a month when you pay quarterly
• $30.00 a month when you pay monthly.

(There is also a Grammarly Business option which costs $12.50 per user per month when billed annually. This provides you with everything included in Grammarly Premium with the addition of an admin panel, statistics for your team, etc.)

Now you know the Grammarly price, you’re probably wondering whether the free version is enough for you? Or should you upgrade to Grammarly Premium?

Read my verdict on this below, including my extensive review of Grammarly Premium.

Free version: What you get

Unlike some products – where the free version or free trial is a poor and hugely-limited version of itself – the free version of Grammarly is pretty great.

It provides you with the basics you need to lay down your writing foundation, with a comprehensive spelling, grammar, and punctuation checker, which is more powerful than the average spell check you get with most word processors.

When the tool finds potential mistakes, it underlines them in red. If you are using the web interface, you can then progress through each issue by clicking the sections on the right (Grammar, Punctuation, etc.). Or you can click on individual highlighted errors to find out more.

The free version will catch most of the basic mistakes in your writing as well as suggesting words that you may have meant to use. For example, it highlights spelling mistakes:

Punctuation mistakes:

Clarity:

It also allows you to choose your version of English depending on where your readers are based:

It will also highlight convention mistakes. For example, it will highlight ‘color’ if you are writing in Australian English.

And finally, you can set “goals” for Grammarly to measure your writing against:

This is a pretty awesome feature which I go into more detail about further down in the review. Note – “Domain” is only available on Premium.

And finally, the “Overall Score” checker is a neat way to measure the quality of your writing. This feature will give you a score out of 100. The more suggestions from Grammarly you implement, the higher your score will be:

This feature also covers vocabulary.

You will also see how many issues Grammarly Premium has found in your writing. Crucially, these will not be visible to you in the free version, and you will have to upgrade to see them.

What are the immediate benefits of using Grammarly?

As soon as you start using Grammarly ,you’ll notice a difference in your writing. Here are the main benefits of the free checker:

• Can be used in “real-time”, highlighting mistakes as you write, or used at the end to run through the entire text to make sure no errors have been overlooked.
• Clear explanations on how sentences could be improved or restructured
• Checks spelling in American, British, Canadian, and Australian English.
• Easy to use on different devices and document types

These are the benefits of using the free Grammarly option.

What about the premium version? Is Grammarly Premium worth getting?

Grammarly Premium review

When it comes to online grammar checkers, you can’t get any better than Grammarly Premium.

Firstly, everything you get in the free version, you get in the premium version. And then you get everything else.

Grammarly Premium includes a far greater number of checks relating to grammar, punctuation, sentence structure and context. In addition to the checks in the free version, it will look out for:

• Writing inconsistencies
• Unclear structure
• Overuse of words
• Wordiness
• Inappropriate tone
• Insensitive language.

Check out the premium version of Grammarly here.

Here’s a great overview from Grammarly comparing the free versus the premium models:

Grammarly claims that its premium version goes beyond grammar to ensure that everything you write is clear and engaging.

And they’re continuously improving the system to keep up with the demands of its users…here are a few new updates:

Spring 2023 Premium Updates on Grammarly

Inclusivity: Get helpful guidance on gender and parenting terminology to write in a manner that fosters comfort and inclusivity. These new suggestions for inclusive language also come with explanations, assisting you in making the most appropriate choices in your writing.

Accurate citations: Regardless of whether you’re working in Google Docs or Microsoft Word, Grammarly ensures your citations adhere to your selected style guide—be it APA, MLA, or Chicago. It keeps your formatting and punctuation consistent, making citation a breeze.

Using Grammarly Premium certainly won’t guarantee your writing is clear and engaging. No grammar checker can turn rushed and sloppy writing into a masterpiece.

However, Grammarly Premium does have some really useful functions that I use on a daily basis.

When I run Grammarly Premium over something I write, it always makes a few additional and helpful suggestions that I incorporate into my text. I find my writing is better for using the premium version.

It also provides detailed information about each of your grammar mistakes in the pop-up box – something you won’t get with the free version.

Customized feedback: My favorite feature

My favorite feature of Grammarly Premium though is the ability to personalize the type of suggestions and feedback I receive.

I mentioned it earlier.

As a writer, feedback is always important. But it’s essential for any feedback to consider the reasons behind the writing, or why the text was written in the first place.

Grammarly seems to be making a conscious effort to turn their AI editor into something more human with these personalized goals.

Here’s how to make full use of this feature.

When you open a new document, you can adjust the settings so that you set writing goals based on:

• Intent (inform, describe, convince, tell a story)
• Audience (general or expert)
• Style (formal or informal)
• Emotion (mild or strong)
• Domain (academic, business or technical).

Adjusting these settings helps Grammarly decide which issues it’ll flag or ignore. Grammarly will also deliver some great insights based on these goals.

Let’s talk about some of these settings and why I think they are so important.

• Audience: Your audience is crucial when determining the delivery of your content. Using jargon and highly technical, industry-specific words can be incredibly useful when your audience are experts in the field. But it can be incredibly jarring when they’re the general audience.
• Formality: The difference between formal writing and informal writing can make or break your paper, assignment, proposal, or even email. You have to know when and when not to use certain phrases and language.
• Domain: The type of writing you’re doing: creative, business, casual, or academic?
• Tone: Do you want to come across as friendly? Confident? Analytical? This feature is great for setting how you want your writing to be received.
• Intent: With the choices of “inform”, “describe”, “convince”, and “tell a story”, you know that the software will try to understand why you’ve set up a narrative a certain way.

While their personalized feedback algorithms aren’t perfect, it’s intriguing to see that there’s a development towards turning a simple grammar check program into an all-around text analyst.

It’s the closest thing you can get towards having a real-life writing coach discussing the nuances of language as you go over your writing.

Is Grammarly Premium worth it?

For me, Grammarly Premium is worth it.

The free version is a useful tool, and better than not having a second set of eyes look over your writing. It will identify far more spelling and grammar mistakes than your typical free checker.

If you’re a writer on a budget, try installing Grammarly and test it for yourself.

However, as with most things in life, things that cost money are better than their free alternatives.

Grammarly Premium will identify more spelling and grammar issues in your document. You’ll also receive tips to improve your writing style and feedback/context behind your mistakes.

I personally pay for the premium version because I appreciate the extra features.

When it comes to writing a blog about editing, proofreading and writing, it’s important that typos and small errors never creep into my work.

In short: If you take your writing seriously, Grammarly Premium is definitely worth the extra expense.

How can it be improved?

While I can endorse Grammarly with confidence, it doesn’t come without its shortcomings.

Here are areas I believe could benefit from some tweaks:

1. More affordable premium option: For the casual writer who sporadically uses Grammarly, the $30.00 monthly cost for premium may feel a bit steep. The free version holds its own, but lacks in advanced features like text structure and tone enhancements, which might be essential based on your writing style.
2. Free premium trial: This leads me to the idea of a free trial for the premium tier. Giving users a taste of the premium perks could reveal its worth and entice a commitment to the subscription. However, Grammarly currently does not offer this.
3. Multi-language support: Grammarly solely supports English, making it less useful for multilingual writers. It’d be interesting to see Grammarly incorporate other languages in the future.
4. Accuracy: Although Grammarly efficiently spots errors, it can’t quite match the precision of human scrutiny. That’s why I always personally review Grammarly’s suggestions before accepting them (more on this later).”

How Grammarly compares to a human editor

This is the part of my Grammarly review I was most excited to write about!

I’m a professional editor of books and journal articles destined for high-level English language journals. I know how important clear, accurate and error-free writing is.

Although Grammarly is effective at catching certain mistakes, it is not a human editor. As an editor, it’s clear to me that machines still have a long way to go before they can match humans.

For a start, some mistakes will slip through on Grammarly, even mistakes that seem quite basic. Some mistakes are simply harder for machines to spot.

For example, you may use a word that is spelled correctly but is not the right word in the context of the paragraph. Or you may mention that someone has blonde hair in one paragraph and brown hair in the next.

Grammarly would not pick up on these mistakes, but a good human editor would.

When it comes to more advanced issues like paragraph length, the tone of voice and the meaning of phrases and sentences, a human is absolutely necessary.

English is a tricky language to write well in, and it’s even trickier to proofread.

English has flexible grammar rules and the elements of good writing and storytelling are highly contextual.

Human eyes will always be superior to the rigidity of automatic tools.

As a result, while Grammarly is a very useful tool for casual writing, it is not suitable for more formal writing. If you are writing a dissertation, an important business document or a manuscript, professional editing is important.

In the end, Grammarly and human editors are not in direct competition. You don’t need to make a choice between them. They have different uses for different types of writing.

Grammarly vs the competition

Grammarly isn’t the only online grammar checker you have at your disposal. However, with over 10 million subscribers, it is the most ubiquitous.

Other grammar checkers with similar features to Grammarly include ProWritingAid, Ginger and WhiteSmoke.

Like Grammarly, they are full-on grammar, punctuation and spell checkers.

How do they compare to Grammarly? Are they a viable alternative? Is there a clear winner when it comes to robot grammar checking?

Let’s find out.

Note: I am a premium subscriber to Grammarly, but I used the free versions of ProWritingAid, Ginger and WhiteSmoke for this review article. The free versions gave me a great feel as to how they work but my view of their premium features is based on what they are designed to do, rather than how I actually experienced them.

ProWritingAid

Pros

• One of the top Grammarly competitors.
• Goes beyond error checks to improve writing style, tackling sentence structure, cliches, overused words, and more.
• Offers an extensive report targeting overall writing quality—great for longer pieces.
• Concentrates on enhancing writing fluidity.
• Premium is $120/year. In comparison, Grammarly is $144/year.Having used ProWritingAid on and off for several years now, I really like their focus on style. As an editor, I come across sentences and passages every day that aren’t technically incorrect but the expression is awkward and a little painful to read.The style suggestions provided by ProWritingAid could improve all sorts of convoluted writing. That being said, there’s always room for improvement:

Cons:

• Favors comprehensiveness over simplicity.
• As a fundamental spelling and grammar tool, it’s not as sophisticated or user-friendly as Grammarly.
• Can be overwhelming due to its detailed style feedback—useful for substantial projects, less so for casual writing.

Ginger

Pros:

• Offers additional features not available in Grammarly, including a 60-language translator.
• Provides a personal dictionary for user-specific terms.
• The yearly subscription is more affordable than Grammarly, at $59.88.

Cons:

• While functionality mirrors Grammarly, Ginger’s interface is less intuitive and aesthetically pleasing.
• Requires hovering over errors for details, slowing down the proofreading process.
• Currently lacks a Mac desktop app and doesn’t integrate with MS Word.

WhiteSmoke

Pros

• Provides integration with major platforms, offering Windows and MacOS desktop apps, along with extensions for Chrome, Firefox, Safari, and Opera.
• Includes handy templates for composing professional documents such as thank you notes, condolences, and apologies.
• A yearly subscription is more cost-effective than Grammarly, priced at $79.95.”

Cons

• Not as advanced as Grammarly, ProWritingAid, and Ginger, at least in terms of user interface and speed. It feels more clunky and outdated to use.

Why Grammarly is better

On the face of it, these grammar checkers provide some serious competition to Grammarly.

ProWritingAid, Ginger, and WhiteSmoke are all robust grammar, spelling and punctuation checkers. They also have some additional features that Grammarly does not.

ProWritingAid provides more comprehensive feedback on your writing style. Ginger has an inbuilt language translator, and WhiteSmoke has professional templates to help you draft professional documents.

And they’re all cheaper than Grammarly too.

However, I still think Grammarly is the best online grammar checker. The reason is simple – it’s the easiest and most intuitive to use.

Grammarly is a more elegant, streamlined and functional tool than its 3 main competitors. They all have an element of clunkiness in comparison.

In particular, the Grammarly desktop app looks great and the layout is highly functional with its minimalist icons. You instantaneously see the mistakes, the reason for the mistake, and can quickly choose to implement or discard them with a simple click.

Installing Grammarly is also so easy. With just a few clicks it checks everything I write when I’m in my browser (I use Firefox). It just works seamlessly in the background.

It’s not surprising that Grammarly is more beautiful and easier to use than its competitors. It’s simply a bigger company with more resources.

Think about this. If they can afford to spend millions on those sleek TV commercials you’ve almost certainly come across, imagine how much they’ve invested into R&D and design across their website, apps and browser extensions?

If online grammar checking were an arms race, Grammarly would have all the nukes.

I’m usually all for supporting plucky upstarts over their bigger rivals. I’m a Watford F.C. fan in the English Premier League after all.

But when it comes to getting a robot to proofread my own writing, I just want the tool that is the easiest to use. I write this blog as a part of my work and I need my workflow to be as efficient as possible.

That’s why I choose to use Grammarly.

Keep this in mind

One thing I want to emphasize about Grammarly before I finish this review: You still need to manually review its suggestions.

In other words, you can’t blindly trust Grammarly to get it right.

Grammarly isn’t a technically perfect grammar checker. It picks up basic errors and typos almost flawlessly, but when things get nuanced, it can throw up some confusing and incorrect suggestions.

This isn’t surprising considering the English language is full of weird conventions and inconsistent rules, and sometimes grammar rules are meant to be broken.

So keep your wits about you when using Grammarly and pay attention. Review its suggestion, read the explanation if necessary, and if you’re still in doubt, Google it.

That’s what I still do occasionally, and I’ve been an editor for years.

My verdict: Is Grammarly worth it?

You’ve read through my Grammarly review, so you know I like it and I use it myself when I write on this blog.

It’s not perfect and will never replace a professional human editor. However, it does a good job for what it’s designed to do.

So should you use it?

I think Grammarly can be a great tool for almost any writer.

The free version is useful for anyone who writes shorter pieces of writing, from bloggers to students to anyone who regularly composes emails.

As for the Premium version, it is particularly useful for anyone producing more professional, longer form content. However, if your document is intended for publication (i.e. dissertation or book) or will be read by important stakeholders (i.e. a work document), I wouldn’t put all my eggs in the Grammarly basket.

I also recommend the premium version to anyone for whom English is their second language.

It’s very easy to make mistakes with the intricacies of English, and Grammarly picks up a lot (though not all) of them. As well as highlighting mistakes, it suggests improvements and provides explanations, making it a useful tool to improve your written English.

Verdict: If you want to provide an extra layer of checks to your writing, or you want to improve your writing by becoming more aware of frequent issues that weaken it, Grammarly is well worth getting.

Thanks for reading my Grammarly review. I hope you found it useful.

Grammarly FAQs

Is Grammarly safe and secure?

Something I see people concerned about (and rightly so) is whether their work is protected on Grammarly.

Grammarly will save your work on its servers so they can access it to proofread it, but once you delete the text from your account, it’s deleted from the server too. Your work remains yours throughout the process.

Back in 2018, Grammarly faced a few issues with data protection and bugs, but from all reports, their team responded quickly and swiftly dealt with the issues.

For those who are interested, all of their privacy terms can be found here.

Do any big companies use Grammarly?

Yes – popular companies like Dell, Cisco, and Boeing, just to mention a few, use Grammarly to proofread their content. It’s also worth noting, over 3000 educational institutes subscribe to Grammarly, including the likes of Harvard, UCLA, and Johns Hopkins University.

Is it worth using the free Grammarly tool?

Absolutely. You can never go wrong with having a second pair of eyes checking your work for those little errors that will undoubtedly creep in.

But for a more advanced, personalized service, you should upgrade to Premium.

Does Grammarly offer discounts?

Yes – but only if you sign up for a Business plan. Grammarly offer volume discounts on annual plans for 10 or more members.