Refine review
A focused Mac writing assistant with local processing and a $38 lifetime plan.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Refine is a native macOS grammar checker and writing assistant for individuals who want writing support across their Mac applications. It provides inline grammar suggestions, fluency and style reviews, explanations for edits, rewriting, translation, text-to-speech, snippets, keyboard shortcuts, and custom prompts. Processing can run locally after the model is downloaded, while bring-your-own-key AI provider support offers another way to configure AI features. Refine supports macOS 14 or later and is designed for users who prefer offline assistance over a cloud-based subscription service.
The product’s application coverage is a major part of its value. Refine works with Mail, Messages, Safari, Chrome, Pages, Microsoft Word, Slack, Notion, Notes, Bear, Ulysses, Discord, Obsidian, Craft, and Scrivener. That range suits writers, professionals, students, and frequent Mac users who move between native apps, browsers, documents, messaging tools, and notes. Its feature set also extends beyond correction: rewriting presets, custom prompts, translation, text-to-speech, snippets, and keyboard shortcuts make it useful for broader writing workflows. Local processing is particularly relevant for users who want their writing assistance to run offline.
Refine uses a freemium model. The Free plan includes core grammar checking, limited advanced features, and no account or credit card requirement. The Lifetime plan costs $38 one time, unlocks all features, includes future updates, supports one device, and avoids a monthly subscription. A seven-day free trial is also available. The tradeoff is platform scope: Refine is Mac-only, and the one-device limit may not suit users who work across multiple computers. Choose Refine for focused, offline Mac writing assistance; consider a broader alternative if cross-platform access or a more established product is essential.
Refine pros and cons
- Where it wins
- Local-model processing supports offline writing assistance
- Works across Mail, Safari, Word, Slack, Notion, and more
- Lifetime plan unlocks all features without a monthly subscription
- Where it doesn't
- Available only for macOS 14 or later
- Lifetime access is limited to one device
- Founded in 2025, with a narrower product footprint
Refine fact sheet, pricing and score →
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