Grammarly
Catching typos and clarity issues everywhere you write, including the Substack editor
Directory / Editing & Proofreading
Editing & Proofreading tools for Substack writers
Catch typos, tighten sentences and keep your voice.
Hemingway Editor
Making dense posts easier to read
LanguageTool
Multilingual writers and anyone who wants a Grammarly alternative
ProWritingAid
Deep style reports for long-form and fiction writers
QuillBot
Paraphrasing, summarizing and quick rewrites
Pricing at a glance
| Tool | Best for | Pricing (checked 2026-10-18) |
|---|---|---|
| Grammarly | Catching typos and clarity issues everywhere you write, including the Substack editor | Free; Pro from $12/mo. |
| Hemingway Editor | Making dense posts easier to read | Free web editor; Editor Plus from $8.33/mo billed annually ($100/yr). |
| LanguageTool | Multilingual writers and anyone who wants a Grammarly alternative | Free; Premium $24.90/mo monthly or $69.90/yr. |
| ProWritingAid | Deep style reports for long-form and fiction writers | Free; Premium $10/mo billed yearly ($120) or $30/mo monthly. |
| QuillBot | Paraphrasing, summarizing and quick rewrites | Free; Premium $19.95/mo or $99.95/yr. |
Prices change. Always confirm on the vendor's site.
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