Comparison

CDP Knowledge Test vs SOLID Architecture

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

Head to head
About

CDP Knowledge Test

Features
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Harness the power of insight with CDP Knowledge Test! Dive deep into tailored exam preparation designed to elevate your understanding and acumen in comprehensive knowledge assessment. Our app offers an all-inclusive array of practice questions spanning crucial topics, empowering you to excel in the Certified Data Professional certification. Each question is paired with an in-depth explanation, reinforcing your mastery and ensuring you’re ready for anything the test throws your way. Key Features: Extensive Question Bank: Dive into a vast collection of practice questions that cover essential themes and sectors, ensuring you miss no critical knowledge areas. In-Depth Explanations: Unravel intricate concepts with detailed rationales accompanying every question, enhancing your grasp and retention of pivotal information. Customizable Quizzes: Tailor your learning path by creating personalized quizzes, choosing specific topics and question types that align with your unique study needs. Progress Tracking: Monitor and analyze your advancement with our seamless progress tracking tool, visualizing your learning curve every step of the way. Offline Access: Keep your study momentum going anytime and anywhere, even without an internet connection, making learning continuously accessible. User-Friendly Interface: Navigate with ease through our sleek, user-centered design, allowing you to stay focused on what truly mattersβ€”your success and readiness. Download CDP Knowledge Test now and engage in a more effective, more enlightened approach to mastering your Certified Data Professional certification. Embark on a journey of learning, confidence, and achievement. Your path to excellence begins today! --- Auto-renewable subscriptions are available from the App Store for CDP Knowledge Test. β€’ Payment will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hrs before the end of the current period. β€’ Account will be charged for renewal within 24-hours prior to the end of the current period. β€’ Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Terms of Use: https://cdp.hubtests.com/terms Privacy Policy: https://cdp.hubtests.com/privacy

About

SOLID Architecture

Features
Read full description

Learning SOLID is an educational app focused on software architecture and development best practices. The goal of the app is to teach SOLID principles in a clear, practical, and applicable way for everyday development. The content is organized into modules, with one module dedicated to each SOLID principle. Each module combines theoretical explanations, real world examples inspired by professional scenarios, and practical exercises to reinforce learning. The app was designed for those who want to understand not only the concept, but also how to apply SOLID in real projects. The examples show tightly coupled code, common maintenance problems, and how to refactor into cleaner and more scalable solutions. In the practical section, users interact with a simple and intuitive interface, allowing them to practice concepts without needing to type code. This enables full focus on architectural thinking and understanding the responsibilities of each class or component. Main features of the app: Clear and objective explanation of all SOLID principles A complete module for each letter of SOLID Real world examples based on market problems Practical and interactive exercises Comparison between incorrect code and refactored code Content focused on architecture and best practices Simple interface for distraction free learning Learning SOLID is recommended for students, beginner developers, and professionals who want to strengthen architectural concepts, write cleaner code, and build systems that are easier to maintain and evolve.

Screenshots

CDP Knowledge Test4 screens
SOLID Architecture4 screens

Verdict

The call

The clearest difference is update cadence: SOLID Architecture at every 9 days against CDP Knowledge Test's every 3 months. SOLID Architecture also leads on iOS requirement (15.0 vs 17.2). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. CDP Knowledge Test sells 2 in-app purchases, starting at $11.99 per month and SOLID Architecture sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CDP Knowledge Test ships an update every 3 months, SOLID Architecture every 9 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard2 real differences Β· 4 level
CDP Knowledge Test versus SOLID Architecture: the parameters behind the verdict, then further details
ParameterCDP Knowledge TestSOLID Architecture
PriceFreeFree
Update frequencyEvery 3 monthsEvery 9 days β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPod β€” better
Requires iOS17.215.0 β€” better
Further details β€” not scored
Size9 MB103 MB
Age rating4+4+
DeveloperCargo Teleport IncAirton Siqueira de Freitas

In-app purchases

2 purchases

CDP Knowledge Test

Subscriptions1
  • Premium monthly subscription$11.991 Month
One-time1
  • Lifetime version$24.99
3 purchases

SOLID Architecture

One-time3
  • CERTIFICATE OF COMPLETION$2.99
  • Premium access$4.99
  • FULL PASS ALL APPS$17.99

Questions

Is CDP Knowledge Test free?
CDP Knowledge Test is free to download, with in-app purchases available.
Is SOLID Architecture free?
SOLID Architecture is free to download, with in-app purchases available.
Do CDP Knowledge Test or SOLID Architecture have ads?
Neither CDP Knowledge Test nor SOLID Architecture shows ads.
Which is updated more often, CDP Knowledge Test or SOLID Architecture?
CDP Knowledge Test ships an update every 3 months, and SOLID Architecture every 9 days. Most recently, CDP Knowledge Test was updated on October 30, 2026 and SOLID Architecture on November 5, 2026.

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