I built a two-way AI voice interview simulator for developers

A developer built DevPrep.app, a two-way AI voice interview simulator that asks questions aloud, listens to spoken answers, provides feedback, and asks follow-up questions. The tool includes over 500 flashcards across various technical topics and offers a free tier.

I built DevPrep.app because I kept failing technical interviews even when I knew the material. The problem wasn't knowledge it was that I'd never actually practised saying my answers out loud under pressure. Most prep tools make you type. Some let you speak into them. But DevPrep.app actually talks back. The AI asks you a question out loud, listens to your spoken answer, gives feedback, and asks follow-up questions just like a real technical interviewer would. It's a genuine two-way voice conversation, not just speech-to-text into a text box. Also includes 500+ flashcards across Azure, C , React, TypeScript, Docker, Kubernetes, Python, SQL, Terraform and more, with progress tracking and review mode. Free tier available. Would love any feedback. devprep.app We're also live on Product Hunt today — would love your support producthunt.com/posts/devprep-app