All Features

Grammar checks

Catch grammar mistakes, typos, punctuation problems, and wording that makes a sentence hard to read.

• Grammar, spelling, typo, and punctuation corrections
• Corrections that focus on mistakes, not changing your style

Rewrite for clarity

Improve longer phrases or paragraphs so they sound more natural while keeping your original meaning.

• Suggestions for natural phrasing and smoother flow
• Small rewrites that preserve meaning and tone

Explain

See why Refine suggested a change, with explanations in the language you choose.

• Explanations for grammar and fluency suggestions
• Helpful when you want to learn from a correction

Selective changes

Choose which parts of a suggestion to keep, skip the parts you do not want, then apply the rest.

• Click changed words to leave them out
• Apply only the parts of a suggestion you want
• Works inside grammar and fluency suggestion cards

Automatic checks

Let Refine check your writing as you type, with an option to pause checks when your Mac is on battery.

• Automatic checks while you write
• Option to pause automatic checks when your Mac is on battery
• Control how quickly Refine responds after you type

Suggestion shortcuts

Choose the keys you want to use for applying or dismissing suggestions.

• Supports Tab, Esc, Return, Space, Delete, arrow keys, Shift, Option, and Control

App filters

Choose which apps Refine should check, and which apps it should leave alone.

• Check only selected apps
• Skip apps where you do not want suggestions
• Easy app selection from running apps or Applications

Website filters

Choose which websites Refine should check in your browser.

• Include or exclude specific websites
• Option to include subdomains
• Useful for browser-based writing apps

PopClip support

Send selected text to Refine from PopClip when you want a quick check.

Selected-text shortcut

Select text in another app and send it straight to Refine with a shortcut.

• Shortcut for checking selected text
• Helpful in apps where inline suggestions are limited
• Copy or paste back with keyboard shortcuts

Pin and resize

Keep the editor above other windows and resize it for anything from a short sentence to a longer draft.

• Always-on-top editing window
• Resizable for short or long text

Translation

Translate the text in the editor to better understand writing in another language.

• Translate selected or drafted text
• Recent languages kept close at hand

Text to speech

Listen to your original text or translated text, with controls for voice, language, model, and speed.

• Read original text from the editor
• Read translated previews
• Voice, language, model, and speed settings

Supported languages

Refine supports these languages for grammar checks, fluency checks, explanations, and translation:

• English (American)
• English (British)
• English (Canadian)
• English (Australian)
• English (New Zealand)
• English (South African)
• English (Indian)
• English (Irish)
• English (Scottish)
• German (Standard)
• German (Swiss)
• German (Austrian)
• French (Standard)
• French (Canadian)
• French (Swiss)
• French (Belgian)
• Spanish (Spain)
• Spanish (Mexican)
• Spanish (Argentine)
• Spanish (Colombian)
• Spanish (Chilean)
• Portuguese (European)
• Portuguese (Brazilian)
• Italian (Standard)
• Italian (Swiss)
• Swedish
• Danish
• Norwegian
• Finnish
• Polish
• Russian
• Ukrainian
• Czech
• Slovak
• Bosnian
• Croatian
• Serbian
• Catalan
• Dutch
• Greek
• Hungarian
• Romanian
• Turkish
• Hindi
• Japanese
• Korean
• Mandarin Chinese
• Cantonese
• Taiwanese Mandarin
• Simplified Chinese
• Traditional Chinese
• Indonesian
• Thai
• Vietnamese
• Arabic
• Hebrew

If the language you want is not listed, send us an email.

Language-aware checks

Choose which languages Refine should check and which languages it should leave alone.

• Include languages you want Refine to check automatically
• Exclude languages you do not want Refine to change

Offline local models

Download a local model once, then run grammar and fluency checks entirely on your Mac.

• Gemma 4

  Learn more
  • Gemma 4 E2B
  • Gemma 4 E4B

• Qwen 3.5

  Learn more
  • Qwen 3.5 4B
  • Qwen 3.5 9B

• Gemma 3n

  Learn more
  • Gemma 3n E4B

Connect your own AI providers

Use your own API key for OpenAI, Anthropic, Gemini, OpenRouter, Bedrock, and compatible services, or connect local tools like Ollama and LM Studio.

• API keys stored in the system keychain
• Requests sent directly to your chosen provider

Choose models by feature

Choose different models for grammar, rewriting, explanations, and translation.

• Dedicated models for grammar and fluency
• Separate models for explanations and translation

Keyboard shortcuts

Create shortcuts for checking text, switching languages, handling suggestions, and opening the Floating Editor.

• Shortcuts for turning automatic checks on or off and switching languages
• Custom keys for applying and dismissing suggestions
• Cursor actions without opening the card

Appearance controls

Customize highlights, suggestion cards, diff colors, and backgrounds so Refine feels comfortable in your workspace.

• Grammar and fluency highlight colors
• Suggestion card size and background
• Colors for added and removed text

Custom instructions

Add your own instructions for grammar and fluency checks, with rules for specific languages and apps.

• Custom instructions for grammar and fluency checks
• Rules based on language and app
• Example instructions for common writing styles

Dictionary

Keep specific words, names, terms, or preferred replacements exactly the way you want them.

• Ignore rules for specific words and replacements
• Keep selected words or phrases as-is
• Case-sensitive or case-insensitive matching