✍️ ProsePolish

REPLACES GRAMMARLY for one price.

Write in the editor, run the checks, fix what matters. ProsePolish proofreads with two layers: built-in checks that run on our server with no AI involved, and — when you connect your own AI provider — a deep review and tone rewrites that run on your AI, with your key, under your control.

$39 one-time. No subscription. Yours forever.

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Layer one — built-in checks, no AI needed

• Spelling against a bundled dictionary of over 230,000 words (the public-domain Webster's Second word list), with a one-click fix suggestion and a personal dictionary for your names and terms.
• The classic slips: repeated words, double spaces, space before punctuation, lowercase sentence starts, “i” uncapitalized, a/an before the wrong sound, and high-precision confusion phrases — should of → should have, your welcome → you're welcome, more then → more than.
• Readability scores — Flesch Reading Ease and Flesch-Kincaid Grade, computed with the standard formulas — plus word count and reading time.
• Style flags, labelled as what they are: sentences over 25 words, and possible passive voice — flagged by a heuristic, and the flag says so.
• Every suggestion shows the exact text it would change. Applying one is safe: if the text has moved on, the suggestion is refused as stale instead of changing the wrong characters.

Layer two — your own AI, when you connect it

• Deep review: your AI reads the document and returns structured suggestions — grammar, clarity, style — each pinned to the exact characters it concerns, for you to apply or dismiss one by one. Nothing is ever auto-applied. If your AI answers in a shape we can't pin to the text, you see its raw feedback instead — we never invent positions for it.
• Rewrites: formal, friendly, concise, more direct, shorten, or expand — on a passage or the whole document. A rewrite is a proposal: the original changes only when you click accept, and version history keeps the old text either way.
• Your provider, your key, your cap. The guided setup wizard covers free/local options (Ollama, LM Studio — local models genuinely work for this, since the job is text) and API options (OpenAI or any OpenAI-compatible endpoint). Your monthly call cap is yours to set; usage counts only when your provider answers.
• Long documents are reviewed in sections of at most 12,000 characters per request, and the result tells you if a document was longer than the part reviewed. A rewrite must fit in one request — over the limit you get a plain refusal, never a silent cut.

Documents, kept properly

• Saved documents with version history — every save, applied suggestion, accepted rewrite, and restore is a version you can go back to.
• A paste-and-check page for one-off text you don't want to save.
• Export to .txt and .md, plus a print view.

What ProsePolish does not do — stated plainly

• No browser extension, and no checking inside other apps. ProsePolish is a web editor on this platform. It does not follow you into Word, Google Docs, or your email client.
• No plagiarism detection. There is no corpus to compare your text against, and we don't claim one.
• No AI-text detection and no citation generator. Neither is in v1.
• The built-in spelling suggestions are the closest dictionary words by edit pattern. The public-domain word list carries no frequency data, so a rarer real word occasionally outranks the word you meant — every suggestion is yours to accept or dismiss, and your personal dictionary absorbs the names and jargon you use.
• Different tools for different jobs: Legalese explains legal documents in plain English, NoteForge is a notes app — neither proofreads. ProsePolish is the proofreader.