Hemingway Editor
Making dense posts easier to read
Directory / Editing & Proofreading / Grammarly
Grammarly
Our verdict: The free browser extension is worth installing. Pro's rewrites can flatten your voice, so accept suggestions selectively.
Best for
Catching typos and clarity issues everywhere you write, including the Substack editor
Pricing
Free; Pro from $12/mo.
Source: official site
Website
Last checked
2026-10-18
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