Hearth Comes to the Desktop — Bigger, Smarter AI, Still on Your Own Computer

Hearth now runs on your Mac as a native app, which means it can run bigger, smarter AI models — entirely on your own computer, still private and free. Same warm Hearth you already know, just with room for a bigger fire.

If you've used Hearth in your browser, you know the idea: a calm, private AI you can talk to without sending a single word to the cloud. The desktop app keeps all of that. It just gives the AI more room to stretch out.

What's new?

Hearth has a native desktop app for macOS. Until now, Hearth lived entirely in your browser tab, running the AI right there using your computer's graphics chip. That's still here, and it's still wonderful for getting started in seconds.

The new desktop app does something the browser can't quite do. It runs the AI models natively on your computer's graphics hardware, outside the limits of a browser tab. The result is simple to say and lovely to feel: you can run bigger, smarter "brains" — and they're still living entirely on your machine.

Think of it like the difference between a candle and a proper hearth. Both give you warmth and light. One just holds a much bigger fire.

Why a desktop app?

A browser tab is a guest in someone else's house. It's quick to visit, but there are walls — limits on how much memory it can use and how hard it can push your graphics chip. Those walls keep the browser version friendly and instant, but they also cap how large a "brain" you can load.

A native app gets to use your computer more fully. That means Hearth on the desktop can run larger models — the kind that follow longer trains of thought, write more naturally, and handle trickier questions with more nuance. A bigger fire, a bigger, smarter brain.

And it does this without changing the part people love most: nothing leaves your machine. The model thinks on your hardware, in your home, with the door closed.

How is it different from the browser version?

The short answer: same Hearth, more headroom.

• The browser version is the zero-install, instant way in. Open a link, and you're talking to a private AI in seconds. Perfect for trying Hearth, for older or lighter computers, and for anyone who just wants it to work without thinking about it.
• The desktop app trades a tiny bit of setup for a lot more power. Because it runs natively on your computer's graphics hardware, it can hold bigger, smarter models than a browser tab can.

Both are private. Both are free. Both work offline — your conversations stay on your computer either way. The desktop app is simply the choice when you want more brains behind the warmth.

You'll also find familiar comforts: Hearth offers a range of "brains" to choose from, small and fast all the way up to large and smart. You pick the one that fits your computer's power, and Hearth keeps the experience warm and quiet around it.

Is it still free and private?

Yes, and yes — on both counts that matter most.

Hearth is still free. The desktop app doesn't add a paywall, an account, or a subscription. And privacy isn't a setting you flip on; it's how the whole thing is built. The AI runs on your computer, so your words never travel to a company's servers to be logged, mined, or trained on. No cloud round-trip. No watching over your shoulder. Just a warm light in a cold cloud — running where you can see it.

Hearth is built by Kevin Champlin, and the source is public (fair source), so anyone who's curious can look under the hood and see exactly how it treats your data: like it's yours, because it is.

How do I get it?

Here's the honest part: the desktop app is newly built and rolling out. It's macOS first — made for Apple Silicon Macs to start — and more platforms may follow as it grows up. It's early, and I'd rather tell you that plainly than oversell it.

So here's the best path today:

• Want to use Hearth right now? Try Hearth in your browser. No install, no account, instantly private. It's the same warm experience, and it's ready this second.
• Want the bigger brains on your Mac? Keep an eye on Hearth. The desktop app is being polished for a wider release, and the best way to be first in line is to start using the browser version and follow along.

The browser version isn't a lesser thing while you wait — it's a genuinely good way to live with a private AI every day. The desktop app is simply what's next: more room, a bigger fire, the same calm warmth.

Come sit by the fire. Start in your browser today at hearth.kevinchamplin.com/app, and the bigger brains will be waiting for you on the desktop soon.