AutoCrit and ProWritingAid get compared constantly because they sit on the same shelf: browser-based self-editing tools that analyse a manuscript and report back. They are not the same tool. AutoCrit was built for fiction from the start; ProWritingAid is a general-purpose writing assistant that has added fiction features. Here is the honest comparison — and the disclosure that Authors Starport competes with both, so weigh our view of the gap they share accordingly.
| Category | AutoCrit | ProWritingAid |
|---|---|---|
| Built for | Fiction manuscripts, with genre benchmarks | All writing; fiction reports added on top |
| Grammar and spelling | Present, not the focus | Strong — one of its core jobs |
| Prose-pattern reports | Repetition, filter words, adverbs, dialogue tags, pacing, clichés, strong-word use, compared to genre averages | A larger set of reports: overused words, echoes, sticky sentences, readability, passive voice, sentence variety, pacing, dialogue tags |
| Genre comparison | Yes — benchmarks against published books by genre | Limited; comparisons are against general targets |
| Story and structure | Pacing signals only; no structural read | None beyond pacing and readability signals |
| Does it make the edits? | No — it reports, you revise | Suggests one-click fixes per sentence and AI rewrites; whole-manuscript editing is still you |
| Voice | Measures you against a genre average | Measures you against general style rules |
| Integrations | Browser-based editor; upload your manuscript | Word, Google Docs, Scrivener, browser extension, desktop app |
| Pricing | Both are subscription tools with plans set by the vendor; both change their tiers, so check each site for current pricing. We don't quote rivals' prices here. | |
Both are diagnostic dashboards. They are good at showing you measurable habits in your prose, and for a writer who enjoys driving revision from reports, either will earn its keep. They also share the same two limits, which is usually why authors end up searching for an AutoCrit alternative or a ProWritingAid alternative:
That gap is what Authors Starport is built for: a Developmental Critique written as an editorial letter cited to your text, a Line Editor that builds a Style Sheet from your own prose and renders the edits as tracked changes in your Word file, a Scene Map, and an Instant Score that covers the metrics ground. Some authors keep AutoCrit or ProWritingAid for diagnosis and use Starport to do the work; the overlap is mostly on metrics.
For a fiction writer choosing between the two, AutoCrit's genre benchmarks make it the more fiction-literate dashboard; ProWritingAid's breadth and integrations make it the better all-round writing assistant. If the thing you actually need is a structural read and a finished line edit in your own voice, neither is the tool for that job — and the cheapest way to check ours is the free Reader-Ready Scorecard on the manuscript you have now.
Most writing tools give you an AI read of your pages and nothing else. Authors Starport is a full editing suite — developmental critique, a line edit delivered as tracked changes, a style sheet built from your own prose, a scene map and an instant score — and every one of those tools is grounded in what real readers actually respond to. Behind them sit 694,681 hook mentions extracted from real reader reviews, 137,874 book blurbs analysed for hook, stakes and tone, and 4,293 reader personas built from that data. On this site, since June 2026, authors have uploaded 74 manuscripts and run 214 completed critiques and edits plus 40 free Scorecards.
Compared with AutoCrit and ProWritingAid, which report how your prose differs from a genre average or a general rulebook, Starport grounds its critique in what real readers praise and reject, models your own voice, and hands the line edit back done.
Counted from our own databases on 21 August 2026. We update these figures when we re-count; we don't round them up.
The Reader-Ready Scorecard grades your full manuscript on nine craft metrics, benchmarks it against professionally-edited books, and tells you exactly what to fix first. Free, in minutes.
Get your free Reader-Ready Scorecard →AutoCrit is the more fiction-specific of the two: it benchmarks your prose patterns against published books in your genre. ProWritingAid has a broader set of grammar and style reports and far better integrations (Word, Google Docs, Scrivener, browser). Both are diagnostic dashboards — neither reads the story's structure, and neither makes the edits for you.
No. Both work at the level of prose patterns — repetition, adverbs, filter words, pacing signals. Structure, stakes, character arcs and whether the ending pays off are outside their scope. For that you need a developmental editor or a story-level tool such as Authors Starport's Developmental Critique.
ProWritingAid offers one-click fixes on individual suggestions and AI rewrites; AutoCrit reports and leaves revision to you. Neither renders a whole-manuscript line edit into your document. Authors Starport's Line Editor does — as tracked changes in your Word file, measured against a style sheet built from your own prose.
Both are subscription tools whose tiers change, so check each site for current pricing rather than relying on any comparison page, including this one. Authors Starport's pricing is on our plans page and is pay-as-you-go by tool.