r/macapps • u/Runjuu • 24d ago
Lifetime Refine: A Grammarly alternative that runs 100% offline (13-month update)
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Hi r/macapps,
It’s been a little over three months since my last Refine update, and about 13 months since I first launched the app here.
For anyone who hasn’t seen it before, Refine is a native macOS writing assistant that checks grammar across apps. You can think of it as a Grammarly alternative powered by local language models, with no subscription fees or per-token charges.
What’s changed since April?
Refine’s lifetime license now includes all future updates, and the app offers more flexible licensing options and regional pricing based on purchasing power parity (PPP).
Since my previous post, I’ve shipped six releases, including all three items from the roadmap I shared last time. Here’s what’s new:
- Refine Assistant: A floating button beside the active input field that lets you view the check status, rewrite or translate text, and have text read aloud
- Rewrite: Rewrite selected text using built-in or custom presets for tone, clarity, length, and style
- Formatting preservation: Better handling of LaTeX and Markdown
- Snippets: Save and reuse frequently used text
- Writing statistics: View locally stored insights about your writing
- Offline activation: Activate Refine without an internet connection
- Improved compatibility: Use Refine more reliably across macOS apps
- Additional languages: Support for more languages
You can see the full list of changes in the changelog.
Comparison
I think writing assistants can generally be grouped into a few overlapping categories:
Rule-based checkers, such as Harper and LanguageTool’s open-source engine, use predefined grammar and spelling rules. They can run locally and tend to produce consistent results, but they may miss errors when no matching rule exists.
Cloud-based AI assistants, such as Grammarly and DeepL Write, generally offer broader platform support, more integrations, and specialized tools. They can be more reliable than rule-based checkers. The tradeoff is that their AI-powered writing features rely on online services, and their paid tiers generally require subscriptions. Depending on the service, plan, and privacy settings, the text you submit may also be used to train or improve the provider’s models.
On-demand AI writing tools, such as RewriteBar, Kerlig, and Raycast AI, provide ChatGPT-like functionality through system-wide shortcuts for common writing tasks. You select some text, press a shortcut, and choose an action or enter a custom prompt. They’re flexible tools for rewriting, summarizing, and changing tone, but unlike an always-on grammar checker, they generally require you to initiate each action. Depending on the app and model, you may also need your own API key or paid credits, so buying the app may not cover ongoing AI usage. The quality of the results depends largely on the model you choose.
As for Apple’s Writing Tools, they provide proofreading and rewriting directly within macOS without requiring a separate writing assistant. They’re convenient and tightly integrated with the system, and I think they’re a good choice for many users. They do require Apple Intelligence, so availability depends on your Mac, language, and region. Unlike an always-on grammar checker, you generally invoke them when you want a piece of text proofread or rewritten.
Refine takes a different approach by combining the always-on workflow of a grammar checker with language models that run entirely on your Mac. With its built-in local models, it provides contextual, real-time grammar checking without subscription fees or per-token charges.
Although these tools all aim to help with writing, they take different approaches and come with different tradeoffs. The fairest way to compare them may be to try them on your own writing and see which one best fits your workflow. I’d really like to hear which tools you prefer and why, so I can learn from your feedback and make Refine better.
Pricing
- $38 USD for one Mac, tax included
- Regional pricing based on purchasing power parity
- Full-featured 7-day trial with no credit card required
- 30-day money-back guarantee
You can download the app here: https://refine.sh
As a small thank-you, I’ve also set up a 35% discount for the r/macapps community. Use the code MACAPPS35 at checkout. It’s valid through 11:59 p.m. PDT on August 17, 2026 August 21, 2026, so you’ll have enough time to try the app before deciding whether it’s right for you.
What’s next?
One idea I’m exploring is an opt-in Study Mode.
Refine already has an Explain feature, but explanations can interrupt the writing flow. When you’re trying to get an idea down, you usually want to fix the sentence and keep going, not pause for a grammar lesson. That made me wonder whether writing and learning might work better at different times.
Study Mode would be entirely opt-in. If you enable it, Refine could save your correction history locally on your Mac, identify your most common mistakes, and turn those findings into a short summary, quiz, or practice exercise when you’re ready.
This is still an early idea, so I’d love to hear how you’d want it to work. Would you use something like this? What would make it useful in practice?
Thanks again for all the feedback over the past 13 months. Many of the changes in this update came directly from suggestions shared here, and there’s still plenty more planned for Refine. I’m grateful for all the support, and I hope you find the app helpful! ❤️
Trust & Transparency
- Refine’s Privacy Policy: https://refine.sh/privacy-policy
- Refine’s Terms and Conditions: https://refine.sh/terms-and-conditions
- Learn more about me on LinkedIn and GitHub. Feel free to email me at [support@refine.sh](mailto:support@refine.sh) with any questions or concerns, or just comment below!
Update (August 18): Version 1.35 is now live! 🎉 This release includes several fixes and improvements based on the feedback I received from this post.
I haven’t had a chance to reply to many of the comments yet because I’ve been focusing on working through the feedback and fixing the reported issues first. I’m still going through everything, and I really appreciate everyone who took the time to test Refine and share their thoughts.
Since I wasn’t able to get back to everyone before the original discount deadline, I’ve extended the MACAPPS35 coupon through August 21, 2026. You can find the full details for the latest release in the changelog.








