OverTone 0.1 / Development preview
Local AI chat.
On your Mac.
Find a model for what you do.
Keep the conversation on your computer.
Free and open source Apple silicon macOS 14+
Free to useNo subscriptionNo message limits
01 / Local
Your conversation
stays with you.
With local models, prompts and replies are processed on your Mac. Conversations and settings are stored there, too.
02 / Personal
A place for
your way of working.
Shape a rough idea into a clearer prompt. Pick up an earlier conversation. Choose models suited to your use and your Mac.
03 / Open
You choose
what connects.
Internet access starts off. Downloads and remote servers are your choice. The app is open source under Apache 2.0.
OverTone in action
A closer look.
Short, complete walkthroughs.
Choose what you would like to explore.
Set up OverTone on your Mac
Compare three suggested models, install Qwen 3.5 4B with both local engines, and send your first message.
The first public preview
Start with
OverTone.
Download OverTone for your Mac, explore what is here, and help shape what comes next.
This development preview is not notarized by Apple. macOS requires your approval the first time you open it. See the first-open steps.
macOS 14 or later
No build tools needed
- 01
Move it to Applications.
Open the downloaded DMG and drag OverTone into Applications.
- 02
Open OverTone.
If macOS blocks this preview, go to System Settings → Privacy & Security → Open Anyway. First-open instructions
- 03
Choose a local model.
Let setup suggest models for your Mac, reuse an existing installation, or connect a compatible server. You decide when to enable internet access.
An independent project
Behind
OverTone.
OverTone is created and directed by Cesare Pillai. The aim is to make working with language models feel natural, with local use and a carefully considered experience at its core.
This is an early development preview. Feedback on the experience, clear bug reports, and thoughtful contributions are welcome.
Community and contributionsA few things to know.
Do I need to know which model to choose?
No. OverTone gives you a starting selection of models suited to your Mac, then suggests models based on how you use OverTone.
Does everything run locally?
When you use a local model, prompts and replies are processed on your Mac. Internet access is off by default. You decide whether to allow catalogue access, downloads, or a connection to a remote server. A remote server follows the policies of its provider.
Is it free?
OverTone is free and open source under Apache 2.0, with no subscription or message quota. Model and engine licenses are separate. The models you can run depend on your Mac’s available memory and storage.
What is available in this preview?
Local chat, prompt refinement, model discovery and downloads, model suggestions, conversation history, model parameters, and personalization. Documents, Projects, and Tools have prepared interfaces, but their workflows are not implemented yet. Windows and Linux are future targets.
How can I help?
Share how the experience feels, report a reproducible bug, or discuss an idea. Please agree substantial changes with the maintainer before implementing them. Read the community guide for the details.