jobby, mock interview prep
learn system design quick
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Archived App (Last seen on 5 Sep 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
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About
Practice system design interviews by talking through them.
Jobby is a voice-first mock interviewer. You speak your design out loud. It listens, asks follow-ups,
challenges your tradeoffs, and scores you when you're done.
42 problems. Pick one and go.
Covers every major pattern — URL shorteners to distributed databases. Each problem has a study guide so
you can learn before you practice.
Two modes.
Practice mode walks you through it together. Interview mode doesn't help — it pushes back, probes
assumptions, and stays quiet when you're stuck. Just like the real thing.
Scored on 5 dimensions.
Structure, clarity, tradeoff reasoning, handling pushback, and conciseness. Every session ends with a
report card and specific feedback.
Pause and resume anytime.
Mid-interview and need to stop? Pick up exactly where you left off.
2 problems a day. Done in 3 weeks.
Reading doesn't stick. Talking through designs does. That's the whole idea.
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What's New in jobby, mock interview prep
1.0.1
March 6, 2026
Improved UI and UX.
