Introduction
ExtraBrain is a local-first desktop AI copilot for interviews, meetings, lectures, research conversations, and other live sessions where context changes quickly. The public site presents it as a Mac app that can work with live transcription, screenshots, selected context, local Gemma 4 where installed and compatible, and bring-your-own AI providers. Its clearest fit is for people who need structured thinking support during high-pressure conversations, while still paying attention to privacy, provider choice, and platform rules.
Key Features
- Live interview and meeting context from audio, transcript text, screenshots, prompts, constraints, and follow-up questions.
- Structured answer support for coding interviews, system design rounds, behavioral prompts, product interviews, consulting cases, lectures, and research calls.
- Local-first setup with local Parakeet transcription and local Gemma 4 on-device AI where installed and compatible.
- Bring-your-own provider options including OpenAI, Anthropic, custom OpenAI-compatible endpoints, Claude Subscription, and Codex Subscription modes.
- Session memory for transcript-aware answers, saved facts, follow-ups, summaries, action items, edge cases, unresolved risks, and post-answer feedback.
- Compatibility signals for common video and interview tools, including Zoom, Google Meet, Microsoft Teams, Cisco Webex, Amazon Chime, Lark / Feishu, Slack Huddles, Discord, HackerRank, CoderPad, Codility, and CodeSignal.
Use Cases
ExtraBrain is designed for live moments where notes, requirements, and decisions arrive faster than a person can organize them manually. The ExtraBrain homepage highlights interviews, meetings, customer calls, lectures, and research conversations as core contexts.
For candidates and engineers, the most specific use case is interview support. The site describes help with summarizing coding prompts, listing edge cases, outlining a clean baseline, and turning system design requirements into components, tradeoffs, and follow-up questions. A careful user should still follow the rules of the employer, school, interview, or platform, since ExtraBrain's own copy emphasizes policy responsibility.
For meeting leads, founders, researchers, and students, ExtraBrain appears useful as a private context layer. It can help extract decisions, risks, owners, follow-ups, customer pain points, quotes, concepts, examples, and review questions before session context fades.
Pricing
ExtraBrain publishes Free and paid options on its pricing page. The Free plan includes the core desktop app, live workflow support, local Gemma 4 where installed and compatible, BYO provider setup, local-first transcripts, prompts, screenshots, notes, session context, local Parakeet transcription, optional Deepgram setup, and help center resources. Pro pricing is shown as $9.99 per month, with a Founder monthly price of $6.99 using the EARLYBIRD code, plus a $79 yearly plan and a $149 lifetime launch option. The site also mentions BYO provider costs and Enterprise support by contact, so users should separate the app price from any external model or transcription provider billing.
User Experience and Support
The setup flow is presented in three steps: download the Mac app, choose local or cloud transcription, then select local Gemma 4 where hardware supports it or connect provider access. The product is described as a desktop app rather than a meeting bot joining the call, which means the user controls what to capture and what context to send.
Support and learning resources are visible through references to a help center, setup, privacy, and troubleshooting guides. The public site also includes FAQ, feedback, pricing, privacy, and download sections. Because the product touches interviews and live meetings, the user experience depends not only on app setup but also on whether the user has confirmed microphone, transcription, provider, privacy, and policy settings before a real session.
Technical Details
ExtraBrain is available for Mac today, with Windows and Linux planned according to the site. It supports local Parakeet transcription, local Gemma 4 on-device AI where installed and compatible, optional Deepgram, OpenAI, Anthropic, Claude, Codex, and custom OpenAI-compatible provider access.
The product separates app access from model usage. That means the app can be free or paid while external AI usage may be billed through the provider accounts, subscriptions, or API keys a user connects. The site also states that ExtraBrain can keep transcripts, prompts, screenshots, and notes on the Mac in a fully local setup, or send selected content to external providers when the user chooses that configuration.
Pros and Cons
Pros
- ExtraBrain has a clear product identity: a desktop AI copilot for live interviews, meetings, lectures, and research sessions.
- Local-first options, local transcription, and local Gemma 4 support where compatible give users more control over where session content is processed.
- BYO provider support avoids locking users into one hosted AI vendor.
- The use cases are specific, especially for coding interviews, system design prompts, meeting follow-ups, customer research, and lecture review.
- The pricing page separates app plans from external model-provider costs, which helps users understand what they may pay for.
Cons
- The app is available for Mac today, while Windows and Linux are only described as planned.
- Local Gemma 4 depends on installation and hardware compatibility, so users should verify their setup before relying on a local-only workflow.
- BYO provider configurations can create separate costs and privacy considerations outside the app subscription.
- Interview and workplace policy compliance remains the user's responsibility, and this matters because the product is designed for live high-stakes contexts.
FAQ
What is ExtraBrain?
ExtraBrain is a local-first desktop AI interview and meeting copilot. It helps users follow live conversations with transcription, screen-aware context, selected prompts, screenshots, session memory, and AI provider options controlled by the user.
Who is ExtraBrain best suited for?
ExtraBrain appears best suited for engineers, candidates, meeting leads, founders, students, product teams, and research teams who need structured context during live sessions. The site specifically mentions coding interviews, system design rounds, product meetings, lectures, research calls, consulting cases, and customer conversations.
Does ExtraBrain work locally?
The site says ExtraBrain can use local Parakeet transcription and local Gemma 4 on-device AI where installed and compatible. It can also connect to external providers, so privacy and processing depend on the setup the user chooses.
Which AI providers does ExtraBrain support?
Visible provider options include local Gemma 4 where compatible, OpenAI, Anthropic, custom OpenAI-compatible endpoints, Claude Subscription, Codex Subscription modes, and optional Deepgram for transcription. Users should verify current provider setup instructions before using the app in an important session.
How much does ExtraBrain cost?
The public pricing page shows Free core access, Pro at $9.99 per month, a Founder monthly price of $6.99 with the EARLYBIRD code, a $79 yearly plan, a $149 lifetime launch option, BYO provider costs, and Enterprise by contact. External AI or transcription usage may be billed separately by the providers a user chooses.
Can ExtraBrain be used during interviews?
The site positions ExtraBrain for live coding interviews, system design rounds, behavioral interviews, product interviews, data and ML interviews, and consulting cases. It also repeatedly reminds users to follow interview, employer, school, workplace, meeting, and platform rules, so policy fit should be checked before using it.
What should users verify before relying on ExtraBrain?
Users should confirm Mac compatibility, microphone and transcription settings, provider configuration, local model availability, hardware support for local Gemma 4, and any rules that apply to the interview or meeting. They should also understand which content stays local and which content may be sent to external providers.
Conclusion
ExtraBrain is a focused AI copilot for live thinking rather than a general chatbot. Its strongest public signals are local-first controls, Mac desktop availability, live transcription context, structured interview and meeting support, and flexible provider choice. For users who handle fast-moving conversations, it is worth evaluating carefully with privacy settings, provider costs, and policy requirements in mind.
