Vocarim
Practice high-stakes conversations with AI voice coaching
What it does
Practice job interviews, sales calls, investor pitches, difficult conversations, and more with AI-powered voice role-play. Create custom contacts with detailed context (their role, personality, what they care about, the situation) or jump into cold contact mode where the AI has zero knowledge of you. Every call gets transcribed and rated 1-5 stars by AI with specific coaching feedback on what worked and what to improve. 39 dollars per month for 120 minutes of practice.
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I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
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Launched alongside, March 2026
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