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CMD-C.app vs Wordtune

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. CMD-C.app starts at $2.99, Wordtune at $4.89. Both have a free tier.

CMD-C.appTriple-tap Cmd-C on macOS to run AI grammar and style correction on selected text in any app.WordtuneSentence rewriter that keeps the meaning you intended

Side by side

FactCMD-C.appWordtune
CategoryGrammar & ProofreadingParaphrasing & Rewriting
Pricing modelFreemiumFreemium
Starts at$2.99 month$4.89 month
Public APINoNo
PlatformsmacOSWeb, Chrome Ext
CompanyCMD-CAI21 Labs
Launched—2020
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

CMD-C.app

CMD-C's system-wide shortcut avoids the usual grammar-checker friction of copying text into a separate app, and the bring-your-own-API-key option makes it effectively free for anyone who already pays for OpenAI or Claude directly. It's macOS-only and, being a small utility, comes with no visible company behind it to vouch for long-term support.

Pros

  • Works inside any macOS app via a keyboard shortcut, no copy-paste to a separate tool
  • Free tier available for users with their own API key
  • Cheap paid tier at under $3 a month for 8,000 corrections
  • Correction history with explanations, not just silent edits

Cons

  • macOS only, no Windows or Linux version
  • No identifiable company or team behind the product
  • Free tier depends on the user already holding a separate paid API key

Wordtune

Wordtune still does the one thing it was built for better than the general assistants do, but its owner is in visible trouble and the product has not shipped news in two years. Cheap and useful today, risky as a dependency.

Pros

  • Rewrites preserve intent instead of paraphrasing into something else, which is the whole point
  • In-place browser extension avoids the copy-paste round trip
  • Cheapest tier is under $5 a month on annual billing

Cons

  • Parent AI21 Labs is in financial distress: a $300M round never closed, acquisition talks with NVIDIA and then Nebius, and reported layoffs above 60%
  • The product blog has not been updated since June 2024 and the site footer still reads 2025
  • AI21's own site no longer mentions Wordtune anywhere, suggesting it is no longer a strategic product
  • Free tier's 10 rewrites a day is exhausted in a single editing session

Which one fits

Choose CMD-C.app if you need

  • macOS users who want grammar correction without leaving their current app
  • People who already have an OpenAI or Claude API key and want a free option
  • Anyone wanting an editable prompt and a correction history

Choose Wordtune if you need

  • Non-native English writers who need a sentence to read naturally, not be rewritten wholesale
  • Anyone editing inside Gmail, Docs or LinkedIn who wants suggestions in place
  • Light users, since the free tier is genuinely usable for occasional rewriting

More comparisons

All Wordtune alternatives →Browse all Grammar & Proofreading →