"Proofreading software" gets treated as one category, but PerfectIt, ProWritingAid, and Grammarly are built around three genuinely different jobs: PerfectIt enforces consistency across a long document (capitalization, hyphenation, abbreviations, style-guide compliance), ProWritingAid analyzes deeper style and structural issues, and Grammarly catches surface grammar and spelling errors in real time, everywhere you type. A working freelance editor's actual workflow usually needs more than one of these, not a single winner.
Coming from a consulting background, I default to evaluating pricing structure and long-term cost before comparing features line by line.
What actually matters for a freelance editor specifically
- What kind of editing is most of your workload — academic and technical editing leans on consistency checking; fiction and long-form content leans on style and structure analysis; general business writing leans on fast, surface-level correction
- Whether you need a specific style guide enforced (Chicago, APA, or a client's house style) — this is a distinct capability most general grammar tools don't cover well
- Solo pricing vs team pricing — Grammarly Business specifically is priced for organizations with analytics and admin controls a solo freelancer doesn't need
- Where the tool lives — a Word add-in, a standalone editor, or a browser extension that follows you everywhere fit different workflows
Quick comparison
| PerfectIt | ProWritingAid | Grammarly (Premium/Business) | |
|---|---|---|---|
| Entry price | ~$70-90/year | ~$120/year, or $399 lifetime | ~$12/month individual Premium; $12.50/user/month Business |
| What it checks | Document-wide consistency — capitalization, hyphenation, abbreviations, style-guide compliance | Deep style and structural analysis — sentence structure, readability, pacing, repeated phrases | Real-time grammar, spelling, and clarity, everywhere you type |
| Where it lives | Microsoft Word add-in | Standalone editor, Word/Google Docs/Scrivener integration | Browser extension, desktop app, Word/Docs integration |
| Best for | Academic, technical, and legal editors enforcing a specific style guide | Fiction and long-form content editors wanting deep structural feedback | Fast, everyday correction across whatever you're writing |
PerfectIt — the consistency checker, not a general grammar tool
PerfectIt is a Microsoft Word add-in built specifically for editors, technical writers, and legal professionals who need a long document to be internally consistent — matching capitalization, hyphenation, abbreviation use, and numbered-list formatting to a specific style guide like Chicago or APA, or a client's own house style. Starting around $70-90/year with no meaningful free plan, it's a narrow tool that does one job very well rather than a general-purpose grammar checker, and it's genuinely essential for editors whose work involves enforcing style-guide compliance across professional or academic documents.
Best for: freelance editors doing academic, technical, or legal editing where style-guide consistency across a long document is a core part of the job.
ProWritingAid — deep style analysis for long-form work
ProWritingAid goes further than surface grammar into structural and style-level feedback — sentence variety, pacing, readability, and repeated phrases — with strong integration for Scrivener, which makes it particularly popular among novelists and long-form nonfiction editors. At roughly $120/year (or a $399 lifetime option), it costs more than Grammarly's individual plan but delivers meaningfully deeper analysis for manuscript-length work than a real-time grammar checker is built to provide.
Best for: freelance editors working primarily on fiction, memoir, or other long-form manuscripts who want structural feedback beyond grammar correction.
Grammarly — fast, everywhere, and the weakest fit for consistency work
Grammarly's strength is speed and ubiquity — real-time correction across whatever you're writing, in whatever app you're writing it in — which makes it a genuinely useful first-pass layer before a human edit even begins. It's not built for document-wide consistency checking or deep structural analysis, which is exactly the gap PerfectIt and ProWritingAid fill. For a solo freelancer, the individual Premium plan (~$12/month) covers the same core correction as Grammarly Business, whose higher per-seat pricing is built around team analytics a solo editor doesn't need.
Best for: catching surface-level grammar and spelling errors quickly across any document, as a first pass before deeper editing.
Bottom line
Most freelance editors end up combining two of these rather than picking one outright. For editors doing academic, technical, or legal work, PerfectIt plus Grammarly's fast surface-level correction covers most of the job without ProWritingAid's structural depth, which matters less for that kind of writing. For fiction and long-form content editors, ProWritingAid's structural analysis is worth the higher price over PerfectIt's narrower consistency focus. None of these replace the actual judgment calls — tone, factual accuracy, context — that are the real value a human editor provides; see our AI writing tools guide for how these fit alongside AI drafting tools in a broader freelance writing and editing workflow.
Pricing and feature sets in this category change frequently. Confirm current plan details directly on each provider's site before subscribing.
Frequently asked questions
Do I need all three of these tools?
Probably not all three at once, but they genuinely solve different problems: PerfectIt checks internal consistency, ProWritingAid analyzes style and structure in depth, and Grammarly catches surface grammar errors in real time. Most freelance editors land on two of the three based on what they actually edit most.
Which tool is best for academic or technical editing specifically?
PerfectIt is the strongest fit for academic and technical editing, since it's built around enforcing style-guide consistency (Chicago Manual of Style, APA, or a custom house style) across long, formal documents — a job Grammarly and ProWritingAid aren't specifically built for.
Is Grammarly Business worth it over the cheaper Premium plan for a solo freelancer?
Usually not — Grammarly Business is priced and built around team analytics and admin controls for organizations. A solo freelance editor generally gets the same core correction features from the individual Premium plan at a lower cost.
Can these tools replace a human editor entirely?
No — even the strongest AI tools reliably catch surface grammar, spelling, and consistency issues, but consistently miss contextual errors, tone mismatches, factual accuracy, and the judgment calls that are the actual value a freelance editor provides. They're a first-pass layer, not a replacement.