Every writer has a tell. Maybe you start too many sentences with “I.” Maybe your dialogue tags are doing backflips when they should be invisible. Maybe you lean on the word “just” like a crutch you don’t realize you’re holding. Maybe every other paragraph opens with a gerund and you’ve never once noticed.
The problem isn’t talent. You can’t see your own patterns. You’ve read your manuscript so many times that the words blur together, and the tics that would jump out to a fresh pair of eyes have become wallpaper. You need someone to point at a sentence and say, “This is why this paragraph feels sluggish.”
That someone, for over four million writers, is ProWritingAid.
A Financial Analyst Who Wanted to Write a Novel
Chris Banks didn’t start out in publishing. He was a financial analyst in London, skilled at the kind of clear, precise writing that business demands. In 2012, after returning from traveling through South America, he decided to write a magical realism novel about his adventures.
He hit a wall almost immediately.
Business writing and fiction writing are different animals. The clarity that served him in financial reports didn’t translate to the descriptive depth and narrative texture that fiction requires. He read books about craft. He studied technique. But sitting alone without a mentor or writing group, nobody to tell him what wasn’t working… he couldn’t bridge the gap between knowing the theory and applying it to his own manuscript.
So Banks did something most struggling novelists wouldn’t think of. He used his data analysis and coding skills to build software that could analyze his own writing patterns. A program that could point at a sentence and say, “You’re telling when you should be showing.” A tool that functioned less like spell-check and more like a patient, tireless writing instructor.
He put it on the internet. Other writers found it useful. ProWritingAid grew from a personal project into a company serving millions of writers, from first-time novelists to New York Times bestselling authors.
There’s a deeper thread to the story, too. Banks’ grandfather was an engineer who lived an extraordinary life, crashing fighter planes and working in remote corners of India. He accumulated the kind of stories most people would kill to tell. But he never shared them. It was only after his death that the family found the stories he’d written and kept hidden. Banks built ProWritingAid, at least in part, so that other people with stories worth telling would have the skills and confidence to actually share them.
(That origin story alone makes me root for this app.)
25+ Reports That X-Ray Your Writing
Grammar checkers are everywhere. Your phone has one. Your email client has one. Grammarly will follow you across the internet, underlining things in red. ProWritingAid does grammar checking too, but treating it as a grammar checker is like calling a Swiss Army knife a toothpick.
The core of ProWritingAid is its library of 25+ writing analysis reports, and this is where it separates from everything else on the market. Each report examines your writing from a different angle, targeting specific craft problems that grammar tools ignore entirely.
The Sticky Sentences report is a good example. It calculates your “glue index,” measuring the percentage of common filler words (the, and, just, that, really) in each sentence. Sentences stuffed with these words feel sluggish to read even when they’re grammatically perfect. The report highlights them so you can tighten your prose with precision instead of just reading the paragraph again and thinking “something feels off.”
The Echoes report catches repetition that’s close enough to be noticeable. Not repeated words across a whole chapter, but the kind where you used “reached” in one sentence and “reaching” two sentences later. Your eye skips right over it. A reader’s won’t.
The Pacing report visualizes the rhythm of your narrative, flagging sections heavy on introspection or description (which slow things down) versus action and dialogue (which speed things up). For fiction writers managing tension across a chapter, this is genuinely useful information that’s almost impossible to assess on your own.
Other reports target sentence variety (are you writing the same length sentence over and over?), sensory detail (are you relying too heavily on visual descriptions and neglecting sound, touch, and smell?), dialogue tags, readability, clichés, diction, transitions, and more. There’s even a Consistency report that catches when you’ve spelled a character’s name two different ways or switched between British and American English mid-paragraph.
The cumulative effect is something unusual for a piece of software. It actually teaches you about your own writing. Run the reports enough times and you start catching your patterns before the software does. The sticky sentences get tighter. The echoes disappear. You begin to internalize what the reports are showing you, and that’s what separates a quick-fix grammar tool from something that genuinely levels up your craft.
AI That Reads Like a Beta Reader
ProWritingAid has been around since 2013, well before the current wave of AI writing tools. But the team hasn’t ignored what large language models can do. They’ve layered AI features on top of the report system, creating something that functions more like a developmental editor than a chatbot.
Chapter Critique gives you instant feedback on individual chapters (500 to 6,000 words). It analyzes narrative structure, tension, characterization, and dialogue quality. Think of it as a writing group that’s always available and never needs a week to get back to you.
Manuscript Analysis scales up to full manuscripts (up to 300,000 words). It examines story overview, narrative themes, plot structure, character development, and setting. It identifies patterns across the entire work, the kind of structural issues that only become visible when you zoom out to manuscript level.
Virtual Beta Reader is the most ambitious of the three. Instead of analyzing your writing from a technical perspective, it simulates a reader’s experience. How does the pacing feel? Where does emotional engagement dip? Where does the story lose momentum? It even offers marketing-adjacent insights like comparable titles and audience positioning. It’s not a replacement for real human beta readers (nothing is), but as a first pass before you send your manuscript to actual people, it can surface the big issues that would otherwise eat up your beta readers’ time.
Chapter Critique is included with any paid subscription (1 per day on Premium, 3 per day on Premium Pro). Manuscript Analysis and Virtual Beta Reader require separate Story Credits, which run $25 to $50 per credit depending on your subscription tier. One credit covers one full analysis.
It Goes Where You Write
One of ProWritingAid’s practical strengths is that it doesn’t force you to change how you work. The web editor exists, and it’s fine, but most writers already have a writing setup they like. ProWritingAid meets you there.
Desktop Everywhere (for Windows and Mac) brings the full suite of reports and suggestions into whatever writing app you’ve got installed. Scrivener, Microsoft Word, you name it. Browser extensions for Chrome, Edge, and Firefox cover Google Docs, Notion, and most web-based writing platforms. There’s also a dedicated Microsoft Word add-in for writers who live in Word.
The integration list is extensive enough that the practical question isn’t “does it work with my setup?” but “which integration is the right one for how I write?”
What You Should Know Before You Subscribe
The free tier is very limited. You get 500 words per check, basic grammar and spelling, a handful of daily AI interactions, and two report runs per day. It’s enough to test whether the reports click for you, but not enough to edit anything of real length. Think of it as a taste, not a meal.
Story Credits are a separate expense. The subscription gets you daily reports and Chapter Critiques, but the manuscript-level AI features (Manuscript Analysis, Virtual Beta Reader, Marketability Analysis) cost additional credits. At $25 to $50 per credit, running all three analyses on a single manuscript is a meaningful investment on top of your subscription.
Twenty-five reports can be overwhelming. If you’re new to craft-level editing, the sheer volume of feedback can feel paralyzing. ProWritingAid lets you combine reports and focus on specific areas, but there’s still a learning curve to figuring out which reports matter most for your writing.
It’s an editing tool, not a writing tool. ProWritingAid won’t draft your chapters, generate plot ideas, or brainstorm characters. Its AI features are focused on analyzing and improving writing you’ve already done. If you’re looking for an AI co-writer, that’s a different category entirely.
The AI features lean toward fiction. Virtual Beta Reader and Chapter Critique are optimized for narrative fiction. Nonfiction writers can still use the reports (which work beautifully for any prose), but the developmental AI tools will be most useful if you’re writing stories.
So Is It Worth It?
Most software wants you dependent. ProWritingAid is the rare tool that actively teaches you to need it less. Run those reports for six months and you’ll start catching your own sticky sentences, your own echoes, your own pacing dips, your own overused words before you even open the app.
A writing tool that gradually makes itself obsolete is either terrible at business or genuinely good at teaching. I think ProWritingAid might be both ;)
