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.

The short answer

Cheaper paid plan: CMD-C.app — $2.99/mo vs $4.89/mo for Wordtune
Free plan: Both have one
Higher Trust score: Wordtune — 96 vs 78 for CMD-C.app
Best fit: CMD-C.app: macOS users who want grammar correction without leaving their current app · Wordtune: Non-native English writers who need a sentence to read naturally, not be rewritten wholesale
Platforms: CMD-C.app: macOS · Wordtune: Web, Chrome extension, iOS

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

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

Fact	CMD-C.app	Wordtune
Category	Grammar & Proofreading	Paraphrasing & Rewriting
Pricing model	Freemium	Freemium
Starts at	$2.99/mo	$4.89/mo
Trust score	78 / 100	96 / 100
Platforms	macOS	Web, Chrome extension, iOS
Company	CailTech Inc.	AI21 Labs
Launched	—	2020
Last verified	Oct 15, 2026	Oct 15, 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 OpenRouter directly. It's macOS-only and a small one-developer utility, so long-term support rests on very little.

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 several thousand corrections
Correction history with explanations, not just silent edits

Cons

macOS only, no Windows or Linux version
The only company detail is a code-signing name, CailTech Inc., and support goes to a personal email address
Free tier depends on the user already holding a separate paid API key
The site quotes both 7,000 and 8,000 monthly corrections for the same plan

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 OpenRouter 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