InterHub vs Don't Break Prod

Build the technical fluency to walk into your next interview prepared. InterHub turns interview prep into a structured, adaptive practice routine, built specifically for software engineers targeting junior, mid, and senior roles. Pick your career path - backend, frontend, fullstack, mobile, DevOps, or AI, choose the technologies you actually use, set a target seniority, and InterHub generates a learning plan that adapts to your answers. Every session you complete sharpens the next one. WHY ENGINEERS USE INTERHUB: Adaptive Question Sessions Questions are selected based on your career path, chosen stack, and how you've answered previously. The system tracks weak topics and reinforces them - no padding, no filler, no cramming a curriculum that doesn't match your goal. Realistic Mock Interviews Run full mock interviews end-to-end. Answer by typing or by speaking, voice answers are transcribed and scored just like a real interviewer would assess your reasoning. Each interview ends with an overall verdict, per-question scores, and structured feedback you can act on. Progress Tracking That Reflects Reality Track your level per technology and across the radar of skills your target role requires. Snapshots over time show whether you're actually closing the gap to the seniority you're aiming for, or only practicing what you already know. Practice Mode for Daily Reps Short, focused sessions for the days you have ten minutes between meetings. Local on-device speech recognition means you can practice out loud without anything leaving your phone unless you opt in to cloud transcription for higher accuracy. WHAT'S INCLUDED: Career paths for backend, frontend, fullstack, mobile, DevOps, and AI/ML roles Question banks across the most common stacks (React, Django, Python, Node, TypeScript, and more) Junior, mid, and senior difficulty calibration Mock interviews with scoring and written feedback Voice or text answers, with on-device transcription by default Progress snapshots and per-technology level tracking Daily practice reminders at a time you choose INTERHUB PREMIUM: Premium unlocks unlimited mock interviews, the full question library across all paths, voice answer grading, and the complete progress dashboard. Available as a monthly or annual subscription. New users get a 7-day free trial. Payments and renewal: Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or turn off auto-renew in your Apple ID account settings at any time after purchase. No cancellation of the current subscription is permitted during an active billing period. PRIVACY: InterHub does not include any analytics or advertising SDKs. We do not collect IP addresses, location, contacts, or photos. Voice answers are transcribed locally on your device by default; cloud transcription is opt-in. See our privacy policy for the full list of sub-processors and data flows. Terms and conditions: https://interhub.tech/legal/terms-and-conditions Privacy policy: https://interhub.tech/legal/privacy-policy

Don't Break Prod turns system design practice into a daily habit. Every day brings one timed incident: a production system is failing, the clock is running, and you make the calls to bring it back. Diagnose the root cause, mitigate, recover, and harden before the timer hits zero. It is built for engineers preparing for system design and on-call interviews, and for anyone who wants to think more clearly about how real systems break. THE DAILY INCIDENT A new production failure every day, the same one for everyone. A cache that went cold, a queue that will not drain, a cert that expired at midnight, a cache key that leaked one tenant's data into another. Time is short, wrong moves cost you seconds, and your score is the time you have left. One scored run per day. Share your result as a spoiler-free card and compare calls with your team. PRACTICE THAT STICKS Work through core topics at your own pace: caching, load balancing, message queues, databases, sharding, consistency, rate limiting, CDNs, and full design walkthroughs like URL shorteners, chat, and news feeds. Spaced repetition brings back what you are about to forget, right when you need it. THREE WAYS TO ANSWER Multiple choice, fill in the blank, and drag-to-order questions, each written to test whether you understand the tradeoff, not whether you can recognize a term. KEEP YOUR STREAK Show up daily and build a streak of days without breaking prod. Earn failover freezes that quietly cover a missed day. Your whole history lives in Profile as a day-by-day grid: every incident survived, every failover spent, every day the pager won. Compare your all-time score with other players on the Game Center leaderboard. PRIVATE BY DESIGN No account, no sign-up, no tracking, no ads. Everything you do stays on your device. The leaderboard is optional and runs on Apple's Game Center. Every question is original writing. The concepts are standard system design material, explained plainly, so you leave understanding the why, not just the answer.