Comparison

System Design interview prep vs Distributed Systems Basics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

System Design interview prep

This app simulates system design interviews with an AI interrogator and interactive scenarios. Practice real-world architecture problems, receive instant feedback, and track your progress to ace your next tech interview.

Highlights
  • Interactive War Room for architecture scenarios
  • AI Interrogator challenges design decisions
  • Realistic system design interview questions
  • Daily practice drills for skill sharpening
  • Detailed performance analytics
  • Instant feedback and best practice learning
Features
Read full description

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

About

Distributed Systems Basics

Features
Read full description

Distributed Systems Basics is an independent study app for learners who want focused practice on core distributed systems ideas without accounts or distractions. Use it to review fundamentals, build practical reasoning skills, avoid common pitfalls, and explore advanced concepts through 160 curated questions. Each question includes an explanation so you can understand the reasoning behind the answer, not just memorize it. Features: - FSRS spaced-repetition intervals for long-term retention - Weak-point heatmap to show topics that need review - Daily challenge for consistent practice - Mock exams for timed self-checks - Explanations for every question - Offline practice with no login required Good for students, self-taught engineers, interview preparation, and anyone reviewing consensus, replication, fault tolerance, consistency, networking assumptions, and system design foundations. Independent study app for Distributed Systems Basics practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners. Practice offline, no login required.

Screenshots

System Design interview prep4 screens
Distributed Systems Basics4 screens

Verdict

The call

The clearest difference is in-app purchases: Distributed Systems Basics at none against System Design interview prep's 5. Distributed Systems Basics also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.6). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. System Design interview prep sells 5 in-app purchases, starting at $3.99 per 7 days. Distributed Systems Basics asks for nothing beyond the download.

Scorecard3 real differences · 7 level
System Design interview prep versus Distributed Systems Basics: the parameters behind the verdict, then further details
ParameterSystem Design interview prepDistributed Systems Basics
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyMonthly—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size89 MB38 MB
Age rating4+4+
DeveloperAbdelhak El MoussaouiAFTW LLC

In-app purchases

5 purchases

System Design interview prep

Subscriptions5
  • Unlimited access$3.997 Days
  • Unlimited access$4.997 Days
  • Unlimited access$6.991 Month
Show 2 more
  • Unlimited access7 Days trial$12.991 Month
  • Unlimited access7 Days trial$99.991 Year
None

Distributed Systems Basics

No in-app purchases

Questions

Is System Design interview prep free?
System Design interview prep is free to download, with in-app purchases available.
Is Distributed Systems Basics free?
Distributed Systems Basics is free to download, with no in-app purchases.
Do System Design interview prep or Distributed Systems Basics have ads?
System Design interview prep shows ads; Distributed Systems Basics does not.

Other comparisons