# jobby, mock interview prep — learn system design quick > learn system design quick (iPhone/iPad app by Sharan Narasimha.) - Source: https://appshunter.io/ios/app/jobby-mock-interview-prep/id6759342026 (this page in markdown: same URL + `.md`) - Developer: [Sharan Narasimha](https://appshunter.io/developer/1866107749) - Category: Education, Productivity - Price: Free - Age rating: 4+ - Requires: iOS 15.1 · 60 MB - Languages: American English - Released: 2026-02-19 - Data updated: 2026-09-05 - User reviews in markdown: https://appshunter.io/ios/app/jobby-mock-interview-prep/id6759342026/reviews.md ## What is jobby, mock interview prep? 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. ## Version history (last 2 releases) ### 1.0.1 — 2026-03-06 Improved UI and UX. ### 1.0.0 — 2026-02-19 No release notes. ## More apps by Sharan Narasimha - [friday, mental health buddy](https://appshunter.io/ios/app/friday-mental-health-buddy/id6757323637) - [Glyph+](https://appshunter.io/ios/app/glyph-plus/id6761002808) All apps by Sharan Narasimha: https://appshunter.io/developer/1866107749 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-05.*