Twin is a local first AI buddy that floats on your Mac desktop: it remembers your day, catcheTwin is a free, open source buddy that floats on your Mac. It catches you up on texts, remembers your calendar, talks back by voice, and nudges you before you forget. Your data lives in a local DuckDB file. Bring your own Claude, GPT, Gemini or Grok key.s you up on your texts, talks back by voice, and nudges you before you forget, all on-device with DuckDB. No cloud, no accounts.
Hey Product Hunt, I'm Siddharth. I wanted to build an agent native operating system, but with the time I had at the Claude Fable 5.1 Build Day, I made Twin instead. It's a small buddy that lives on your Mac and keeps your day on your machine.
I nearly launched it as a SaaS, then chose open source because privacy matters more to me right now. Every line is on GitHub.
It needs a Mac with Apple silicon on macOS 13 or later, plus an API key from Claude, GPT, Gemini or Grok. Only your message, your name and a fuzzy summary go to the provider you pick. I've held back on agentic features for now, and I'd love honest feedback from real users on what to build next. What would you want a buddy like this to do?
Hi, is there any chance of adding chatgpt subscription to power Twin? I'd love to give it a go but haven't got an actual API key as I use the plus subscription ☺️
About Twin on Product Hunt
“a tiny buddy that lives on your Mac”
Twin launched on Product Hunt on October 1st, 2026 and earned 69 upvotes and 3 comments, placing #27 on the daily leaderboard. Twin is a local first AI buddy that floats on your Mac desktop: it remembers your day, catcheTwin is a free, open source buddy that floats on your Mac. It catches you up on texts, remembers your calendar, talks back by voice, and nudges you before you forget. Your data lives in a local DuckDB file. Bring your own Claude, GPT, Gemini or Grok key.s you up on your texts, talks back by voice, and nudges you before you forget, all on-device with DuckDB. No cloud, no accounts.
Twin was featured in Productivity (662k followers), Open Source (68.9k followers) and Artificial Intelligence (479.9k followers) on Product Hunt. Together, these topics include over 305.8k products, making this a competitive space to launch in.
Who hunted Twin?
Twin was hunted by Siddharth Thakkar. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Siddharth Thakkar