Comparison

CloudStreak vs System Design interview prep

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

Head to head
About

CloudStreak

Features
Read full description

Pass your AWS Solutions Architect Associate (SAA-C03) certification through daily practice questions on your phone. No cramming. No 40-hour video courses. Just 5-10 minutes a day. Stop failing AWS exams. CloudStreak uses daily practice questions and streak tracking to build the consistent study habit that actually makes you pass. WHY CLOUDSTREAK WORKS FOR AWS CERTIFICATION Most AWS exam prep apps give you giant question banks and hope you'll study. You won't. CloudStreak delivers 10 AI-generated practice questions to your phone every day. Build a streak. Build a habit. Pass your certification. Daily Questions for AWS SAA-C03 - Get 10 AWS Solutions Architect practice questions every day - AI generates unlimited fresh questions at your skill level - Never see the same question twice - Detailed explanations for every answer (right or wrong) - Covers all 4 SAA-C03 exam domains: Design Resilient Architectures, Design High-Performing Architectures, Design Secure Applications, Design Cost-Optimized Architectures Streak Tracking That Works - Build a daily practice streak (like Duolingo for AWS) - Don't break the chain - streak accountability keeps you practicing - See your exam readiness score increase daily - Track progress across all AWS domains Smart Progress Analytics - Real-time exam readiness percentage - Domain-by-domain performance breakdown (Security, Resilience, Performance, Cost Optimization) - Identify weak areas instantly - Know exactly when you're ready to take the real AWS exam Mobile-First AWS Exam Prep - Practice on your phone, anywhere - 5-10 minutes per session - Perfect for commutes, coffee breaks, lunch - No desktop required - Works offline (Pro feature) CLOUDSTREAK PRO - PASS FASTER Upgrade to Pro for unlimited practice and advanced features: Unlimited Daily Questions - Practice as much as you want (Free tier: 10 questions/day) - Remove all limits - Pass on your timeline, not ours Target Your Weak Areas - Focus practice on specific AWS domains - Drill Security questions until you master them - Practice only Performance or Cost Optimization - Surgical improvement where you need it most Complete Question History - Review every question you've attempted - Re-attempt questions to track improvement - Filter by domain, correct/incorrect, date - See patterns in your mistakes Advanced Analytics - Sub-topic breakdown within each domain - Time-to-mastery predictions - Performance trends over time - Confidence intervals for exam readiness Exam Simulation Mode - Full 65-question timed practice exams - Actual SAA-C03 format (130 minutes) - No immediate feedback (just like the real exam) CERTIFICATIONS SUPPORTED Currently: AWS Certified Solutions Architect Associate (SAA-C03) Coming soon: Solutions Architect Professional (SAP), Developer Associate (DVA), SysOps Administrator Built by a backend engineer who got tired of cramming for AWS certs and forgetting everything two weeks later. REAL RESULTS "I passed SAA-C03 in 38 days using CloudStreak Pro. The daily habit made it feel effortless compared to my first attempt where I crammed for 2 weeks and failed." - Sarah C., Backend Engineer "Finally, an AWS prep app that doesn't waste my time with video courses. Just questions, explanations, and progress tracking. Passed on my first try." - Michael R., DevOps Engineer START YOUR STREAK TODAY- Build test-day confidence

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

Screenshots

CloudStreak4 screens
System Design interview prep4 screens

Verdict

The call

The clearest difference is ads: CloudStreak at none against System Design interview prep's shown. CloudStreak also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (13.0 vs 17.6). On price, in-app purchases 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. CloudStreak sells 2 in-app purchases, starting at $19.99 per month and System Design interview prep sells 5 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CloudStreak ships an update every 2 weeks, System Design interview prep monthly. The most recent releases landed on September 11, 2026 and July 23, 2026 respectively.

Scorecard3 real differences · 7 level
CloudStreak versus System Design interview prep: the parameters behind the verdict, then further details
ParameterCloudStreakSystem Design interview prep
PriceFreeFree
Rating—1.0 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 weeks — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size60 MB89 MB
Age rating4+4+
DeveloperSharon MishayevAbdelhak El Moussaoui

In-app purchases

2 purchases

CloudStreak

Subscriptions2
  • PrepPal PRO Monthly Plan$19.991 Month
  • PrepPal PRO Yearly Plan$136.991 Year
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

Questions

Is CloudStreak free?
CloudStreak is free to download, with in-app purchases available.
Is System Design interview prep free?
System Design interview prep is free to download, with in-app purchases available.
Do CloudStreak or System Design interview prep have ads?
System Design interview prep shows ads; CloudStreak does not.
Which is updated more often, CloudStreak or System Design interview prep?
CloudStreak ships an update every 2 weeks, and System Design interview prep monthly. Most recently, CloudStreak was updated on September 11, 2026 and System Design interview prep on July 23, 2026.

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