ProWritingAid restructured its pricing in the past year, and the current lineup is worth understanding before you commit to a tier, because the gap between monthly and annual pricing is unusually large, and the lifetime option costs far more than most one-time-purchase writing tools.
The current pricing tiers
- Free. A 500-word limit per check, two report runs a day, ten rephrases a day, and three "Sparks" a day. Enough to test the tool, not enough for regular manuscript work.
- Premium. $30 a month, or $120 a year ($10 a month effective) if paid annually. Paying monthly costs three times more over a year than paying annually, one of the largest monthly-to-annual gaps in this category.
- Premium Pro. $36 a month or $144 a year, adding AI features and coaching on top of Premium.
- Lifetime. $399 for Premium, $699 for Premium Pro, paid once.
What the lifetime option actually costs you
ProWritingAid's own lifetime tier is worth pointing out specifically, because at $399 to $699, it's ten to eighteen times the price of Quillen's one-time purchase. It does considerably more in its specific category (grammar and style checking across genres, not fiction-specific analysis), so the comparison isn't a straight swap, but it's a useful anchor for what "one-time purchase" can mean across this market: not every one-time price is a low one.
What ProWritingAid does that a fiction-specific tool doesn't
To be direct about it: ProWritingAid is a full grammar and style checker, with dozens of report types covering everything from sentence structure to overused words to consistency checks, and it works across genres and document types, not just fiction. If comprehensive grammar checking is what you need, nothing described here replaces that.
Where a narrower, cheaper tool covers real ground
A meaningful slice of what novelists actually use ProWritingAid for during drafting, catching filter words, passive voice, clichés, and similar prose habits, is a narrower category than full grammar checking, and it's the specific category Quillen's built-in Analyze Document tool targets. It's rules-based rather than AI-driven, flags nine categories of common prose weakness directly in the manuscript with a stats bar showing counts against a target threshold, and never sends any text off your device. It's included in Quillen's $39 one-time price rather than billed separately.
If what draws you to ProWritingAid is fiction-specific prose feedback rather than general grammar checking, it's worth testing whether Quillen's built-in analysis covers what you actually use day to day before paying for a separate, ongoing subscription.
Common questions
Does ProWritingAid have a one-time purchase option?
Yes. ProWritingAid sells lifetime licenses at $399 for Premium and $699 for Premium Pro, in addition to its monthly and annual subscriptions. Both lifetime tiers cost substantially more upfront than a typical one-time-purchase writing app.
Can Quillen replace ProWritingAid?
Not entirely. ProWritingAid is a full grammar and style checker with dozens of report types. Quillen's Analyze Document tool covers a narrower, fiction-specific set of prose weaknesses (filter words, passive voice, clichés, and similar) using rules rather than AI, at no extra cost beyond the app's one-time price. For general grammar checking, ProWritingAid still does more.