How it works
ExtraBrain runs as a Mac desktop app while you practice Spark Hire prompts. It transcribes your rehearsals, keeps your notes visible, and lets you review each take to improve pacing and clarity.
Spark Hire is a one-way video interview platform where you record answers to set questions. ExtraBrain helps you rehearse those answers and review your delivery before you record for real.
Spark Hire Interview Practice Assistant - ExtraBrain is part of ExtraBrain's local-first Mac workflow for live interviews, meetings, transcription, provider control, and responsible AI use.
Spark Hire is a one-way video interview platform where you record answers to set questions. ExtraBrain helps you rehearse those answers and review your delivery before you record for real.
ExtraBrain has 1 current public platform family, macOS, with support for 2 Mac CPU families: Apple Silicon and Intel.
ExtraBrain has 3 configurable data paths to review before sensitive work: local Parakeet transcription, local Gemma 4 where installed and compatible, and external providers you choose.
ExtraBrain runs as a Mac desktop app while you practice Spark Hire prompts. It transcribes your rehearsals, keeps your notes visible, and lets you review each take to improve pacing and clarity.
Rehearse timed video responses and review the transcript to remove filler and lead with your strongest point.
Hold your key talking points and examples on screen while you rehearse so nothing important gets missed.
Use saved transcripts to spot rambling answers, weak openings, and places to be more specific.
Use any live AI assistant only where interview, workplace, school, and platform rules allow it. Do not use generated answers to misrepresent your skills, experience, or authorship.
Short answers for people and crawlers comparing ExtraBrain with other live AI assistants.
Yes. ExtraBrain is built for rehearsing Spark Hire one-way video prompts, transcribing your practice answers, and helping you review and refine them.
Use ExtraBrain to prepare beforehand. During the actual recording, follow the employer and platform rules, and do not misrepresent your skills or authorship.
Yes. The core Mac app is free. Pro adds custom profiles and session history starting at $6.99/month.