# System Design Arcade — Practice System Design Daily > Gamified system design learning with offline progress tracking. (iPhone/iPad app by Harsha Hassan Somashekara.) - Source: https://appshunter.io/ios/app/system-design-arcade/id6759821733 (this page in markdown: same URL + `.md`) - Developer: [Harsha Hassan Somashekara](https://appshunter.io/developer/1842004703) - Category: Education, Reference - Price: Free - Rating: 5.00/5 from 6 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 38 MB - Languages: American English - Released: 2026-04-21 - Data updated: 2026-09-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/system-design-arcade/id6759821733/reviews.md ## What is System Design Arcade? Most system design prep is paid and online. System Design Arcade is free, works offline, and keeps your progress on your device. The system design interview is the one where the whiteboard goes blank. You've read the books. You've watched the videos. But when the interviewer says "design Instagram," you freeze — because reading about consistent hashing at 2am is not the same as knowing it cold. System Design Arcade is the fix. It turns every building block — caching, sharding, load balancing, rate limiting, CAP theorem, consistent hashing — into 60-second arcade levels you can actually finish. On the subway. In line for coffee. While waiting for CI. On a plane with no Wi-Fi. WHY ARCADE BEATS EXPENSIVE COURSES 5-minute mini-games beat 5-hour video courses you never finish. Active recall beats highlighting. And nothing beats free. THREE TRACKS, ONE CURRICULUM Concepts — master one building block at a time. Caches, databases, queues, replication, sharding, load balancing. Everything that shows up in the first thirty minutes of the interview. Problems — design complete systems end-to-end. URL Shortener, Rate Limiter, News Feed, Chat, Ride Sharing. The classics, played out like boss fights. Tools — hands-on drills with the infrastructure you'll actually use on the job. Redis. Kafka. Docker. Kubernetes. Story Mode — narrative capstones that show WHY Netflix shards by user_id, WHY Twitter chose Redis for the timeline, WHY Discord built their own pub/sub. CHALLENGE TYPES THAT DON'T FEEL LIKE FLASHCARDS Multiple choice, ordering puzzles, fill-in-the-blank, API Builder, Architecture Builder, and Scenario-Why drills — each level mixes formats so your brain has to actually engage. The Scenario-Why drills are the secret weapon: they train the reasoning behind the answer, not just the answer. DAILY CHALLENGE A fresh challenge every day, picked deterministically so you and your study buddy see the same one. Streak counter. Optional reminder notifications (opt in from Settings) so you don't break the streak. BUILT FOR YOUR EYES Retro arcade aesthetic by default. Pixel fonts. Neon glow. If that's not your thing, switch to the playful sticker-card vibe or open the Theme Lab and tune background, glow, gradient, and font until it feels right. Read Aloud narrates every explanation — learn while you walk. YOUR PROGRESS STAYS YOURS By default, everything saves on-device with no account required. No tracking pixels in your answers. Sign in with Apple anytime from Settings to back up your progress and sync it across your iPhone and iPad. We use privacy-friendly product analytics to see which levels need work — never the content of your answers. FREE TO PLAY, FULL CONTENT INCLUDED No ads. No paywalls. No gated levels. No subscription. New games ship every sprint. Start with Level 1. ## Key features - Arcade-style mini-games for system design concepts - End-to-end system design challenges - Hands-on drills with infrastructure tools - Narrative-driven story mode - Varied challenge types (multiple choice, puzzles, builder) - Daily challenges with streak tracking - Offline progress saving ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/system-design-arcade/id6759821733/reviews.md ### 5/5 — Thank you *2026-06-12* Thanks for putting so much work and making it free! Thank you ### 5/5 — Genuinely good prep *2026-05-31* A lot of other system design prep apps on the App Store are really just repackaged LLM outputs (more often than not, slop!) but this app was made with a lot of care and curation with the learner experience in mind. I have not come across another single resource that has as much breadth, structure and thoughtfulness in an iOS app. Would recommend if you are currently preparing for interviews. ## Frequently asked questions about System Design Arcade ### What is System Design Arcade? System Design Arcade is a free mobile application that teaches system design concepts through a series of short, arcade-style games. It covers fundamental building blocks, full system designs, and practical tools, making interview preparation more engaging. ### How does System Design Arcade help with interview preparation? It breaks down complex topics like caching, sharding, and load balancing into manageable 60-second levels. The app uses active recall and varied challenge formats to ensure deep understanding, rather than passive learning. ### Can I use System Design Arcade offline? Yes, System Design Arcade works offline by default. Your progress is saved directly on your device, allowing you to study anytime, anywhere, without needing an internet connection. ### Does System Design Arcade have ads? No, System Design Arcade is completely ad-free. The app is designed to provide an uninterrupted learning experience without any advertisements. ### How often is System Design Arcade updated? New games are shipped every sprint, indicating a regular update cycle. The latest version, 1.6.0, was released on June 18, 2026, suggesting consistent development and content additions. ### What devices does System Design Arcade support? System Design Arcade is available on iPhone, iPad, and iPod. It is designed to be accessible across various Apple mobile devices. ### Is System Design Arcade suitable for beginners? Yes, the app is structured to help users master individual building blocks and then progress to designing complete systems. The 'Concepts' track focuses on mastering one building block at a time, making it suitable for those new to system design. ### What is the learning methodology of System Design Arcade? The app employs a gamified approach with active recall, using mini-games, puzzles, and scenario-based drills. This method aims to engage the user's brain more effectively than traditional study methods like reading or highlighting. ## Version history (last 5 releases) ### 1.10.0 — 2026-07-21 Your Daily Challenge, Front and Center The daily puzzle now leads your home screen as the top "Up Next" pick until you finish it. Build a streak — and a streak freeze keeps it alive the day you miss. Challenge a Friend Finish a level, share your score, and your friend taps the link to land on the exact same challenge with your score to beat. Weekly Recap A new card on Home shows what you pulled off in the last 7 days — levels cleared, points earned, topics mastered. Smoother Learning Tighter pacing between challenges, clearer explanations, and a batch of polish from a full UX pass. ### 1.8.2 — 2026-06-30 Your Daily Challenge, Front and Center The daily puzzle now leads your home screen as the top "Up Next" pick until you finish it. Build a streak — and a streak freeze keeps it alive the day you miss. Challenge a Friend Finish a level, share your score, and your friend taps the link to land on the exact same challenge with your score to beat. Weekly Recap A new card on Home shows what you pulled off in the last 7 days — levels cleared, points earned, topics mastered. Smoother Learning Tighter pacing between challenges, clearer explanations, and a batch of polish from a full UX pass. ### 1.6.0 — 2026-06-18 Your Daily Challenge, Front and Center The daily puzzle now leads your home screen as the top "Up Next" pick until you finish it. Build a streak — and a streak freeze keeps it alive the day you miss. Challenge a Friend Finish a level, share your score, and your friend taps the link to land on the exact same challenge with your score to beat. Weekly Recap A new card on Home shows what you pulled off in the last 7 days — levels cleared, points earned, topics mastered. Smoother Learning Tighter pacing between challenges, clearer explanations, and a batch of polish from a full UX pass. ### 1.4.0 — 2026-06-11 Your Daily Challenge, Front and Center The daily puzzle now leads your home screen as the top "Up Next" pick until you finish it. Build a streak — and a streak freeze keeps it alive the day you miss. Challenge a Friend Finish a level, share your score, and your friend taps the link to land on the exact same challenge with your score to beat. Weekly Recap A new card on Home shows what you pulled off in the last 7 days — levels cleared, points earned, topics mastered. Smoother Learning Tighter pacing between challenges, clearer explanations, and a batch of polish from a full UX pass. ### 1.3.3 — 2026-06-10 Daily Challenges + Streaks One new system-design puzzle every day. Build a streak, get a 9pm reminder before it breaks, and unlock streak milestones. Goal-Driven Onboarding Tell the app why you're here — interview prep, learning, or just curious — and Story Mode surfaces the right path. Share Your Wins After you finish a level, generate a share card and send it to a friend with a deep link back to that exact level. New Help Layer Hints unlock automatically when you're stuck, dive-deeper links go to canonical sources, and read-aloud now works on scenario challenges with accessibility polish. Under the Hood Mobile-tuned ASCII diagrams, tighter typography, faster taps on Settings, and dozens of visual audit fixes. ## More apps by Harsha Hassan Somashekara - [HyperFit: Lift & Fuel Tracker](https://appshunter.io/ios/app/hyperfit-lift-and-fuel-tracker/id6765838078) All apps by Harsha Hassan Somashekara: https://appshunter.io/developer/1842004703 ## Related topics [system design arcade](https://appshunter.io/ios/topics/system-design-arcade) · [system designer](https://appshunter.io/ios/topics/system-designer) · [system design refresher](https://appshunter.io/ios/topics/system-design-refresher) --- *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 2026-09-01.*