Grammarly vs RewriteCmd

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: RewriteCmd — $5/mo vs $12/mo for Grammarly
Free plan: Both have one
Higher Trust score: Grammarly — 94 vs 73 for RewriteCmd
Best fit: Grammarly: Anyone writing in a browser, Word or email who wants corrections in place · RewriteCmd: Mac users who rewrite text across many different apps and want one shortcut everywhere
Platforms: Grammarly: Web, Chrome extension, Windows, macOS, iOS, Android · RewriteCmd: macOS

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

GrammarlyGrammar, tone and rewriting help inside every app

RewriteCmdHighlight text in any Mac app, hit a hotkey, and get it rewritten in place by Claude, GPT, or Mistral.

Side by side

Fact	Grammarly	RewriteCmd
Category	Grammar & Proofreading	Paraphrasing & Rewriting
Pricing model	Freemium	Freemium
Starts at	$12/mo	$5/mo
Trust score	94 / 100	73 / 100
Platforms	Web, Chrome extension, Windows, macOS, iOS, Android	macOS
Company	Superhuman	Hyperstack Studio
Launched	2009	—
Last verified	Oct 16, 2026	Oct 25, 2026

What our research says

Grammarly

Still the default for catching mistakes inside other people's software, but the free tier has quietly become an AI-prompt meter and the honest price is $30 unless you commit to a full year.

Pros

Runs inside the apps people already write in rather than as a separate editor
Free tier still covers spelling, grammar and tone detection with no time limit
Pro folds in plagiarism and AI-text detection that rivals charge for separately

Cons

The $12 headline is the annual rate; paying monthly costs $30
Free AI allowance is 100 prompts a month and depletes quickly
No public API, so it cannot be embedded in another product
Enterprise pricing is not published anywhere on the site

RewriteCmd

RewriteCmd's whole value is staying out of the way — no browser tab, no copy-paste round trip, just select text and hit a hotkey. Storing API keys locally in the Keychain instead of routing them through a vendor server is a real, checkable privacy choice, but it also means you need your own API key and are paying the model provider separately from the $5 app fee.

Pros

Works inside any Mac app via a global hotkey rather than a single integration
Supports three model providers (Claude, GPT, Mistral) instead of locking you into one
API keys stay local in the Keychain rather than passing through the vendor's own servers

Cons

Requires bringing and paying for your own API key on top of the app's $5/month fee
macOS 13+ only — no Windows, Linux, or mobile version exists

Which one fits

Choose Grammarly if you need

Anyone writing in a browser, Word or email who wants corrections in place
Teams enforcing a house style guide across people who are not writers
Non-native English speakers who want fluency rewrites, not just error flags

Choose RewriteCmd if you need

Mac users who rewrite text across many different apps and want one shortcut everywhere
Anyone who already has a Claude, OpenAI, or Mistral API key and wants a lightweight front end for it