ExtraBrain
Private AI copilot for interviews and meetings
ExtraBrain is a free macOS AI copilot for live interviews, system design rounds, debugging calls, and technical meetings. It runs as a private overlay visible to you, can stay out of macOS screen recordings/screen sharing where supported, listens/transcribes, reads selected screen context, and gives concise real-time analysis with local transcription, BYO providers, custom endpoints, and built-in profiles.
Features
ExtraBrain turns live audio, transcript text, screenshots, and selected context into organized prompts, answer structures, and session memory while keeping local Gemma 4 availability, provider choice, costs, and privacy boundaries visible.
- Live interview and meeting context
- Interview answers with structure
- Choose local Gemma 4 or providers you control
- Local-first by design
Use Cases
- Inteview
- Meeting
- Call
- Notetaker
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Comments
The 'invisible to screen recordings' overlay is the clever part for live system-design rounds. The detail I'd want up front: how does it capture meeting audio on macOS — a virtual-audio driver (BlackHole-style) or tapping the call app directly? That setup step is usually where these overlays lose people.
The 'private' framing is the smart wedge here - most meeting copilots pipe everything to the cloud, which is a hard no for sensitive interviews. Is the processing actually local, or is 'private' more about not retaining the audio afterward? For anyone in a regulated field, that one distinction is what decides it.
This is a brilliant concept. The fact that it runs locally as an overlay and doesn't join the Zoom call as a creepy bot is a massive game-changer for live interviews. Of course, to actually land the interview so you can use this, you first gotta make sure to use RetunerAI to tailor your resume 😉 But once you finally make it to the hot seat, having a private copilot like ExtraBrain looks like an absolute lifesaver. Awesome work on the privacy focus, congrats on the launch! 🚀
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Makers
Makers
Comments
The 'invisible to screen recordings' overlay is the clever part for live system-design rounds. The detail I'd want up front: how does it capture meeting audio on macOS — a virtual-audio driver (BlackHole-style) or tapping the call app directly? That setup step is usually where these overlays lose people.
The 'private' framing is the smart wedge here - most meeting copilots pipe everything to the cloud, which is a hard no for sensitive interviews. Is the processing actually local, or is 'private' more about not retaining the audio afterward? For anyone in a regulated field, that one distinction is what decides it.
This is a brilliant concept. The fact that it runs locally as an overlay and doesn't join the Zoom call as a creepy bot is a massive game-changer for live interviews. Of course, to actually land the interview so you can use this, you first gotta make sure to use RetunerAI to tailor your resume 😉 But once you finally make it to the hot seat, having a private copilot like ExtraBrain looks like an absolute lifesaver. Awesome work on the privacy focus, congrats on the launch! 🚀
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