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Not everyone is a writer.
And the English language isn’t exactly simple.
That’s where a service like Grammarly comes in.
Is Grammarly Worth it? Is it really the ultimate grammar, spelling, and plagiarism checker tool?
Or is it just another overhyped, expensive premium tool?
We’ve been a paying premium user for over three years, using it on a daily basis.
So that’s what we’ll answer in this hands-on, in-depth Grammarly review.
Disclosure: Grammar Gang is reader-supported. We might earn a small commission if you purchase something through our site. Learn more.
Grammarly Premium Review: Video Overview
Grammarly Pros: Is Grammarly Really Worth It?
Grammarly is a full-service grammar, proofreading, and plagiarism checker, with both a free version and premium plans.
You can run a full scan on any copy you’ve written, and Grammarly will make sure it is squeaky clean from spelling mistakes, , punctuation , plagiarism issues, and loads more.
Plus, the Grammarly Handbook will provide detailed explanations of these issues so you actually become a better writer after using it.
My hands-on test was a breeze. We used the online editor, browser extension, desktop, and even mobile apps to compile this review.
It accurately flagged 86% of the mistakes on our control article (that we run through every grammar checker and plagiarism tool). The plagiarism checker, specifically, tore our sample copy to shreds (in a good way).
In addition, the customer service department was both fast and friendly (responding in about an hour).
But enough beating around the bush. Here are all of the details.
1. Very User-Friendly (10 seconds or less)
Both the web-based and desktop options from Grammarly are easy to use.
After heading over the www.grammarly.com, you sign in and it takes you to the system’s dashboard.
From this control panel, you can either start a new document or open a previous one.
I chose to start a new document and got right to work.
It took me to a fresh page, where you can either paste in copied text or upload a file to be checked. I decided to copy and paste our sample article.
We follow the same steps for every tool test.
We have a control article that is loaded with plagiarism. Like, it’s really really bad.
It was originally for a client project and we paid a real writer to produce it. Then, we saw how it was basically just ripped off a bunch of other sources.
So we use this same article to provide a benchmark across each tool to get a consistent baseline of accuracy for each premium tool.
But before checking, I set a list of goals to give Grammarly a better sense of what we were looking for in this article:
Your intent helps Grammarly decide which mistakes it’ll flag or ignore.
Are you trying to inform, describe, convince, or tell a story? What kind of audience are you trying to reach? Are they experts in the field you’re writing about? Are they knowledgeable? Or are you dealing with a general audience, who may or may not know anything about your topic?
You can also decide if you’re writing in a formal or informal manner and if you’re going for a mild or strong tone.
Finally, you can tell Grammarly where this content is going so it can better decide how to handle certain mistakes:
After you’ve decided on goals, it’s time to check the actual document.
Once I pasted the copy, the system got right to work. I had my results in less than ~10 seconds.
Grammarly has a ton of extra features once you drill down into the details. You can view them all in detail here based on our hands-on test:
2. Extremely Accurate (16+ Billion Database)
Grammarly pulls from a proprietary database of over 16 billion websites. That’s a whole lot of internet real estate, and they cover it in under a minute.
But the bigger the database, the more sources they’ll have to pull from and match to make sure accuracy is never an issue.
As mentioned, we use the same control article to check every tool.
So we can immediately tell whether each checker is accurate or not.
Grammarly ranks at the top of that list, spotting just about every issue we had in the document.
When it’s finished analyzing your text, you’re left with a marked-up article and a sidebar on the right-hand side which lets you navigate the recommendations by category.
See that 87 at the top? That’s our overall score. It’s saying that this copy is better than 87% of the documents uploaded to Grammarly with similar goals.
It then runs down the entire list of categories that fall under the Grammarly software umbrella, like grammar, punctuation, conciseness, and more. The number beside each category is the number of suggestions the system has for you on that particular subject.
So, for example, there were six instances where Grammarly felt our variety was off. The spell checker also found 14 different spelling corrections, 22 perceived punctuation mistakes, and so on.
I found all of the advice given to be highly accurate and helpful to the overall piece. Let’s go through a few of them individually.
3. Most Accurate Plagiarism Checker (#1 out of 10)
Plagiarism is a stain on the writing world.
Taking credit for someone else’s work is a reprehensible offense.
An act of plagiarism can be met with a series of consequences, up to and including a costly lawsuit, so you’ll want to make sure that everything you’re posting on a business website is on the up and up.
Even if it’s other writers doing the work on your behalf.
We’ve tested over ten different plagiarism checkers and found Grammarly to be the most accurate. (Please note that you’ll need the premium option to access the plagiarism features.)
The sample article that we used to check these programs is loaded with plagiarized content. A good plagiarism checker will quickly see that more than 80% of this piece is unoriginal.
Grammarly tore through it like a jungle cat on a gazelle, coming to the conclusion that 86% of this article was taken from other sources. It went on to identify 11 different sites with similar or matching content.
Most plagiarism is accidental, so it’s great that Grammarly is providing you with sources to properly cite your information. Remember, anything that is not original has to be cited, or your business could face severe penalties.
But sometimes, like in the case of this article sample, it’s not. Someone is blatantly copying other people’s work.
The plagiarism checker for Grammarly is not a separate application. The beauty of Grammarly’s design is its simplicity. One copy and paste gets you the whole shebang, from grammar and spelling all the way to plagiarism.
Grammarly isn’t unfair in its assessment either. We also uploaded a totally original piece and let Grammarly work its magic:
We got a very positive plagiarism report back, citing only one fragment from one source that was the only kind of similar.
It should be noted that Grammarly’s plagiarism detector is only available with their paid premium version, and free users have no access.
As an aside, you should also do a few manual checks if you think plagiarism is an issue.
For example, check out the two benefits listed in this post we purchased from a popular writing tool:
Then, we looked up the top-ranking pages for that word in Google, and found this:
Bottom line: Plagiarism is tough to spot. But a tool like Grammarly Premium can help cut down on the big mistakes tremendously.
4. High Limits (150k+ Words)
Grammarly’s limits are more than fair, and they should serve the purposes of professional writers and editors as well as most businesses.
Five different devices can be connected to a Grammarly Premium version.
They allow 300 reviewed documents or 150,000 words to be reviewed in a 30-day period. To put that in perspective, a full-length novel is 60,000 words, so you’re getting a lot.
There is also a daily limitation. You can review 100 documents, or 50,000 words, in 24 hours. So, in theory, you could use up your entire allotment in a three day period at the fastest, but you’d have to be putting in a lot of information to do so.
Size matters when uploading a document. Grammarly requires all files to be 4MB or less. Supported file types include Microsoft Word documents, OpenOffice, .rtf, and .txt.
5. Detailed, Downloadable PDF Reports
Another of Grammarly’s more useful features is its ability to generate reports and export them as a PDF document.
You can start by clicking on the insights tab on the right of the page. It generates a mini-report that looks like this.
Click on the bottom of the tool where it says “DOWNLOAD PDF REPORT.” Your download should begin automatically.
A four-page PDF was generated for me, showing the overall percentages and major mistakes identified in my doc.
From here, you can see how things like sentence structure and writing style have improved (or haven’t) over recent documents.
I also love that it gives you the reading and speaking time for the document. This is helpful for anyone working on a speech or presentation.
6. Tool compatible with Mac, Windows, Chrome, Firefox, Safari, Word, Outlook, Google Docs, and More.
Personally, I like the Grammarly online editor.
But the good news is that there’s an app available for pretty much every circumstance.
You can use a Grammarly extension on basically any tool, including browser plugins for Chrome, Firefox, and Safari. You can correct your emails and social media postings before putting them up. This is essential for social media marketing managers and business people who have a lot of email communication with clients.
I tried it out for myself using their Grammarly Chrome Extension, enabling Grammarly to check my terrible email skills:
I purposely made a number of mistakes and all of them were highlighted.
At first, I was dismayed to see that they weren’t catching my punctuation mistakes, but then I saw a Grammarly browser button in the bottom right-hand corner of my email window, and when I clicked on it, my faith was restored.
Honestly, don’t leave home without the Grammarly Chrome extension.
There is also a Grammarly desktop app. I tested it with the Microsoft Word extension and liked it a lot. It adds a lot of these helpful extra tools that Word usually lacks.
Once activated, the Word add-in works just like the standalone Grammarly desktop version.
You’ve got the marked-up article on the left and suggestions on the right. They also have an app for Microsoft Outlook, too. So you can enable Grammarly to check everything from emails to essays with the Office add-in.
You can customize the experience by deciding what Grammarly will check for in the bar at the top. Advanced mistakes, genre, vocabulary enhancement, and plagiarism are for the premium level accounts only and are not accessible to free members.
Grammarly also has an extension for Google Docs that’s perfect for double checking informal, one-off pieces like blog posts. So you can now add the extension and write like normal, taking advantage of the real-time collaboration while still getting detailed insights to improve your sentence structure.
Last but not least, you can install Grammarly on both iOS and Android mobile devices.
The mobile app is actually a keyboard that installs into your operating system. It requires some additional changes in your phone’s settings but acts as a constant editing companion for all of your text messages and mobile content. It’s very helpful for the business person on the go.
So whether you prefer the Grammarly online editor or one of the numerous extensions, apps, or plugins, you’re covered no matter where you go.
7. In-Depth English Language Recommendations
While some may think that the English language is the same everywhere, there’s a huge difference between American English and British English.
For example, an American writer would write the word “center” while a British writer would write “centre.”
British English also throws a lot of “u’s” in seemingly random places. In both the UK and Canada, the word “color” is written “colour.”
Grammarly allows you to pick whether you’re creating content in American or British English, so you can easily proofread any English variation no matter if you’re writing for the US, Canada, or Great Britain.
8. Premium Human Proofreaders Available
Grammarly’s base service is pretty darn good. It’s already head and shoulders above the competition in accuracy and plagiarism detection.
But they take it one step further with the option for a built-in human proofreading review if you need more than a simple spell check.
For an additional cost (quite a bit, as you’ll see), you can have a real human editor look over your work to catch complex sentence structure issues or nuanced writing style mistakes.
The link for this is on the bottom right-hand corner of the Grammarly user interface. Once you click it, a number of options come up.
They charge by the word. And work is returned in either 24 hours, three hours, or 30 minutes, when the proofreaders are available for it. The shorter the time frame the higher the per word price goes.
9. 1-Hour, Friendly Customer Service
Customer service is huge for me when reviewing a product. I want to make sure that my mistakes are being answered quickly and properly.
Grammarly’s customer support team is a delight.
Unfortunately, they don’t have a live chat function. But they do have a contact form that is actually answered pretty quickly.
I sent them a question regarding human proofreaders. I like to ask questions that are readily available on the website because I’m also testing the patience of their support staff. If they’re annoyed at my question and it shows, that’s bad service.
I received an answer right around the one hour mark. That’s amazing, considering most other services we tested took days to respond.
This was a great answer, so complete and patient. Christine over at Grammarly really knocked it out of the park with this one.
She started off cheerfully, didn’t make me feel foolish for asking a question that is answered on their site, and walked me through the process. Perfect
Grammarly Cons: Is Grammarly Premium Worth the Cost?
That was an awful lot of pros. Just one shy of 20. The Grammarly browser option alone should be essential.
But Grammarly is not a perfect system. There are definitely some cons that we have to outline.
For starters, the free Grammarly version is just merely OK. They really really really want you to upgrade to Premium. And, I’ll be honest: it’s not the cheapest option out there if you’re just checking a few blog posts.
They also don’t support any foreign languages at this time.
Here’s a quick overview of the drawbacks.
1. Free Grammarly Version is OK (You’ll Need to Upgrade to Get Full Value)
The Grammarly free version is a good way to get your feet wet. It will make some minor edits on emails and other documents.
But it is limited in what it can do.
For example, it might tell you that you’ve got 34 issues and 47 advanced issues. Those advanced mistakes can only be seen with the Grammarly Premium version, and you’ll eventually need to upgrade to get the full value out of it.
2. Expensive Monthly Premium Version (Need to Switch to Annual Discount)
The premium version of most grammar, proofreading, and plagiarism checkers we’ve reviewed fall in the $10/month range.
A Grammarly account does, too. But only if you upgrade to the annual plan. Otherwise, the month-to-month option will set you back $29.99/month.
I started out monthly to try out the service:
Fortunately, Grammarly offers more long-term plans to bring down this high monthly rate. We switched to annual billing years ago to take advantage of the huge discount (slashing the monthly price in half to only $11.66 / month):
Of course, you can’t beat free. And they do have a good free version.
But the annual Grammarly discount is really the only way to go if you’re serious about using the premium version to unlock all this goodness.
3. Grammarly Only Supports English
Unfortunately, a Grammarly account only supports the English language at this time.
They let you choose between American English and other forms of English, such as British. But that’s about as far as the program’s language capabilities go.
So international customers will, unfortunately, have to look elsewhere. Our multilingual pick is WhiteSmoke that includes over 55 different languages.
Grammarly Premium Pricing & Plans: How Much Does Grammarly Cost a Month?
You can sign up for Grammarly for free to test it out.
And when you’re ready to upgrade, Grammarly costs anywhere between $11.66 – $29.95 a month.
Here’s how the Premium plans break down:
A month-to-month plan will cost $29.99 per month. A quarterly plan costs $19.98 per month, which is billed as one payment of $59.95 and lasts for four months. An annual plan, marked here as the best value, is $11.66 per month and is billed as a one-time payment of $139.95.
The annual Grammarly discount saves you the most, and I think it’s a good investment for professional writers. (You can write it off as a business expense on your taxes!)
They accept major debit and credit cards along with PayPal.
Do I Recommend Grammarly?
Yes, I recommend Grammarly.
It will cost you. It’s not the cheapest option by a long shot.
But after reviewing over 20 different grammar and plagiarism tools, Grammarly is the clear winner across both categories.
The good news is that you can test Grammarly for free to see the value for yourself.
You can use the web Grammarly version across every single browser, or download the desktop app to check Word, Outlook, and more.
Just know that Grammarly’s true potential is realized when the Premium version is allowed to shine. It works across a variety of platforms, including Microsoft Word or with the Grammarly Chrome browser extension.
The plagiarism checker is very accurate, and I’m a huge fan of how Grammarly presents its findings. It’s more than just a spell checker — it tries to educate, which I really appreciate.
Grammarly is about more than making good edits, it’s trying to make good writers.
I think this is a sound investment for any professional writer, editor, or business pereson.
It might be a bit pricey for your average college student. But if they can afford it, I could see this being a tremendous tool to use in crafting your next term paper.
Two thumbs up. 👍👍