Works offline
- Refine
- Yes, after downloading a local model
- DeepL
- No. DeepL's desktop documentation requires an internet connection.
Refine vs DeepL Write
Both tools improve grammar and phrasing. Refine is built around private local models on Mac; DeepL Write connects writing help across web, desktop, mobile, workplace apps, and an API.
v1.34
macOS 14+
Full-featured 7-day free trial
| Feature | Refine with local model | DeepL Write |
|---|---|---|
| Works offline | Yes, after downloading a local model | No. DeepL's desktop documentation requires an internet connection. |
| Where writing is processed | On your Mac when a local model is selected | On DeepL infrastructure |
| Language coverage | 50+ languages and regional variants | Nine language families listed for general Write; features vary by language and platform |
| Pricing model | $38 one-device lifetime license | Free limited use; standalone Write Pro costs $16.50 per user/month or $10.99 per user/month billed annually ($131.88/year) in the U.S., before tax |
This comparison covers published product features and architecture. It does not claim that either tool produces more accurate corrections without a controlled, reproducible test.
Refine
Context-aware grammar, spelling, and fluency suggestions from your selected model.
DeepL Write
Grammar, spelling, and punctuation corrections, plus alternative words and phrasing.
Refine
Fluency changes, explanations, translation, built-in and custom rewrite presets, custom prompts, and per-task model choices.
DeepL Write
Alternative words and sentences, shortening, and preset styles and tones where supported.
Refine
Local checks can keep the checked text and model response on your Mac.
DeepL Write
Writing is sent to DeepL. DeepL uses free-service text and corrections to train and improve its AI; Write Pro text is not used for training.
Refine
Surfaces suggestions in compatible text fields across most Mac apps, with a floating editor fallback.
DeepL Write
A shortcut or floating icon copies selected text into a DeepL window or app for improvement.
Refine
A native app for macOS 14 or later.
DeepL Write
Web, Windows, macOS, mobile, browser extensions, Google Workspace, Microsoft Word, and API.
Refine
A focused Mac writing assistant with local processing and individual customization.
DeepL Write
Write Pro advertises team administration, style rules, SSO, audit logs, and enterprise security controls.
Refine
Local checks do not have a metered per-character subscription quota.
DeepL Write
The main free flow allows 1,500 characters at a time; Write Pro advertises unlimited characters, subject to plan and platform limits.
Refine
$38 once for one Mac, or $68 once for 3 Macs.
DeepL Write
A free limited experience is available. In the U.S., standalone Write Pro is $16.50 per user/month or $10.99 per user/month billed annually ($131.88/year), before applicable sales tax. Add-on and bundled options are also available.
The key architectural difference
DeepL publishes meaningful protections for Write Pro, but the text still leaves the device for processing. Refine can run the writing task locally after its model is downloaded.
Text stays on your Mac
The checked text and model response stay on your Mac. Optional hosted providers, license checks, telemetry, and user-submitted feedback are separate network flows.
Used for AI training
DeepL says submitted content, improvements, and corrections to suggestions are processed for a limited period to train and improve its neural networks and algorithms.
Not used for AI training
DeepL says submitted text is kept only temporarily to produce the improvement, deleted after processing, and not used to improve its services.
Refine is the better fit when local processing and a Mac-wide writing workflow matter more than a broad cloud ecosystem.
DeepL Write is the better fit when cross-platform access, workplace integrations, and centrally managed business features matter most.
Yes. Once a local model is downloaded, Refine can check grammar, improve fluency, explain changes, translate, and run custom prompts on your Mac without an internet connection.
DeepL's desktop troubleshooting documentation says an internet connection is required. Its privacy policy also describes transmitting writing to DeepL to produce an improvement.
Yes, if you use the free service. DeepL says submitted content, improvements, and corrections to suggestions are processed for a limited period to train and improve its neural networks and algorithms. For Write Pro, DeepL says content is temporary and is not used to improve its services.
DeepL's general Write help lists Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, and Spanish, including some variants. Its Write Pro pages publish a narrower list, and some features vary by language and platform.
Choose Refine for offline local inference, broader language coverage, custom model choices, and one-time Mac pricing. Choose DeepL Write for cross-platform integrations, an API, centrally managed style rules, and enterprise administration.
DeepL facts were checked against official product, help, privacy, and security pages on July 31, 2026. Feature and plan details can change. General Write and Write Pro currently publish different language scopes, so this page keeps those claims qualified.
Browse direct comparisons for choosing a private AI writing assistant.
Compare Refine and Grammarly on offline use, privacy, local Mac processing, language support, pricing, and writing workflows.
Compare Refine and LanguageTool on private offline AI, Mac-wide writing, language support, customization, and subscription pricing.
Compare Refine with LanguageTool's self-hosted server on local processing, setup, privacy boundaries, language coverage, and writing workflows.
Compare two private, offline writing assistants: Refine's contextual local AI and Harper's free, open-source grammar rules.
Compare private, Mac-wide local AI with Hemingway's focused readability editor, cloud AI subscription, and offline desktop app.
Compare Refine and ProWritingAid on offline use, local privacy, writing reports, app support, languages, and pricing.
Download Refine and use the full-featured trial before buying a lifetime license.
v1.34
macOS 14+
Full-featured 7-day free trial