Refine

6.9easy start · #52of 88
in Grammar checkers

Free to practise onyes
Well documentedyes
Runs where you workno

Runs on Mac. Paid plans from $38/mo.

Refine is ranked #52 of 88 in grammar checkers on The Geeks Club, made by Refine (Canada). It runs on macOS. There is a free plan. Paid plans start at $38/mo.

Refine plans and pricing

All plans

Free Free Core grammar checking · Limited advanced features · Occasional reminders · No account or credit card refine.sh · 10 Oct 2026

Lifetime $38/mo Paid once for lifetime access 1 device refine.sh · 21 Sept 2026

Lifetime (1 device) $38 once Paid once All features unlocked · All future updates · Use on 1 device · No extra token fees refine.sh · 10 Oct 2026

Compared on grammar checkers

Free plan: Yes
Desktop app: Yes
Style suggestions: Yes
Languages supported: 36

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The record

Purpose: Refine is an offline AI grammar checker for Mac apps.
Features: It offers grammar and fluency checks, explanations for fixes, rewriting, translation, read-aloud, snippets, and custom prompts.
Languages: Refine supports 36 languages and 59 varieties.
Integrations: The site lists plugins for Obsidian, Neovim, Sublime Text, and PopClip, and says Refine works in most Mac apps.
Privacy: With a local model selected, Refine processes writing on the Mac; if using a cloud AI service with a personal API key, text goes directly to that service.
Offline use: After a one-time model download, grammar checks, rewrites, and translations run on the Mac without an internet connection.
API keys: Users can connect their own API keys; the site says requests go directly to the provider and keys are stored in macOS Keychain.
System requirements: Refine requires macOS 14 or later; the site says an Apple Silicon Mac with 16GB memory runs the local model comfortably.
Support: The site directs users to email [email protected] and offers a full refund within 30 days of purchase.
Windows and Linux: Windows and Linux versions are on a waitlist, with no availability timeline stated.
License limit: The displayed $38 lifetime license covers one device; the site also mentions multi-device licenses without displaying their price in the opened page.
Maker: The site identifies Runju Huang as an indie developer behind Refine.
Founded: 2025
Headquarters: Canada
Price from: $38/mo

Where it ranks on The Geeks Club

Best Grammar Checkers in 2026#52 of 88

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Sources

refine.sh· checked 10 Oct 2026