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About System Design interview prep

ArchSim is the ultimate training ground for software engineers preparing for system design interviews. Forget passive reading—ArchSim puts you in the driver’s seat of a high-stakes engineering simulation with a fast, value-first onboarding and a 60‑second drill preview to get you into the action quickly. Key Features: Interactive War Room: Solve real-world architecture scenarios in a dynamic environment. Define requirements, estimate capacity, and design your system component by component. AI Interrogator: Face off against an intelligent Prep AI that challenges your decisions, asks follow-up questions, and probes for weaknesses in your design. Realistic Scenarios: Tackle classic and modern interview questions like “Design a URL Shortener” and “Design a Social Network.” Perfect for your job search. Daily Drills: Short 5–10 minute practice sessions to build fundamentals, track streaks, and sharpen core skills. Detailed Analytics: Track your performance, identify knowledge gaps, and monitor your improvement over time with comprehensive metrics. Debrief & Learn: Get instant feedback on your design choices and learn best practices for scalability, reliability, and maintainability. Whether you are a junior developer or a staff engineer, ArchSim provides the practice you need to ace your next tech interview and land your dream job. ----------- Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Terms of Use: https://calico-magnolia-61e.notion.site/archsim-terms-of-use-2c6 Privacy Policy: https://calico-magnolia-61e.notion.site/archsim-privacy-policy-2c

What’s new

Version 1.0.3 · Updated March 9, 2026

- Faster, value‑first onboarding with clearer messaging - Daily Drill now stays within the main navigation for a smoother flow - Advanced architecture analysis

App privacy

The developer, Abdelhak El Moussaoui, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Contact Info: Email Address
  • Identifiers: User ID, Device ID
  • Usage Data: Product Interaction

Used for: Developer’s Advertising or Marketing, Analytics, App Functionality

Alternatives to System Design interview prep

Looking for apps like System Design interview prep? Here are 6 similar apps on the App Store. The highest rated is System Design Arcade (5.0/5), and all 6 are free to download.

System Design interview prep vs. alternatives
App Rating Price Last updated Compare
System Design interview prep 1.0 / 5 (2 ratings) Free March 9, 2026
Systematic FYI – Free Jun 24, 2025 Compare
SD Primer – Free Jul 19, 2026 Compare
System Design Arcade 5.0 / 5 (13) Free Oct 19, 2026 Compare
System Design Refresher – Free Jun 11, 2026 Compare
Tech Interview Prep – Free Jan 15, 2026 Compare
Yeetcode: DSA & System Design 5.0 / 5 (1) Free Aug 22, 2026 Compare

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