Comparison

Data Engineer Cert Prep vs AWS Knowledge Test

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

Head to head
About

Data Engineer Cert Prep

Features
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Pass the AWS Certified Data Engineer โ€“ Associate (DEA-C01) exam with a native, offline-first practice app built around real exam scenarios across every domain of the current exam. WHY THIS APP Most Data Engineer quiz apps are thin question dumps with no explanations or a domain mix that doesn't match the real exam. This one is built and weighted to the official DEA-C01 exam guide, and every question โ€” not just the answer key โ€” comes with a full explanation of why the right choice is right and the others are wrong. WHAT'S INCLUDED (FREE) - 100 exam-style questions weighted to match the official DEA-C01 domain breakdown - Every question comes with a detailed explanation referencing official AWS documentation - Choose 5, 10, or 15 questions per practice session - Track your progress, streaks, and score history right on your device - Works fully offline- study on a plane, a commute, anywhere - No account, no sign-up, no ads - The first 100 questions are free. One in-app purchase unlocks all 150 in this app, with no subscription. EXAM DOMAINS COVERED - Data Ingestion and Transformation (34%) - Kinesis, MSK, Glue ETL, DMS, Firehose, EventBridge, MWAA, Lambda - Data Store Management (26%) - S3, Redshift, DynamoDB, Aurora, Lake Formation, OpenSearch, Iceberg/Glue Data Catalog - Data Operations and Support (22%) - CloudWatch, Step Functions, EMR, Glue Data Quality, AWS Batch, Amazon Q Developer - Data Security and Governance (18%) - IAM least privilege, Lake Formation permissions, KMS, Macie, VPC endpoints BUILT FOR REAL STUDYING Every question is written as a scenario a working data engineer would actually face, with distractor answers that test common misconceptions rather than obvious wrong picks. Explanations cite the relevant AWS service behavior directly so you learn the reasoning, not just memorize a letter. WANT MORE? Djamgatech PRO bundles a bigger 150-question Data Engineer Associate bank alongside dozens of other AWS, Azure, GCP, and AI certification question banks in one app - all offline, all ad-free. Start practicing for free today and walk into your DEA-C01 exam ready.

About

AWS Knowledge Test

Features
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Test Your AWS Knowledge with AWS Knowledge Test AWS Knowledge Test is designed to help cloud professionals gauge and refine their AWS expertise. This app provides comprehensive testing on key AWS topics, with detailed explanations for each question to deepen your understanding. Key Features: Comprehensive Testing: Assess your knowledge across core AWS services, including architecture, cloud operations, and security, ensuring you're ready for real-world challenges. Detailed Explanations: Every question includes an in-depth explanation, helping you reinforce concepts and sharpen your AWS skills. Extensive Question Bank: Challenge yourself with a broad range of questions tailored to boost your confidence and knowledge. Focused Skill Building: Target essential areas like cloud security, architecture, and data management, enhancing your ability to excel in AWS environments. With AWS Knowledge Test, youโ€™ll not only test your understanding but also strengthen your expertise through detailed feedback, helping you become more proficient in AWS cloud systems. Start testing your AWS knowledge today and grow your cloud expertise with confidence! --- Disclaimer: AWS Knowledge Test is an independent educational tool designed to assist users in preparing for AWS certification exams. This app is not affiliated with, endorsed by, or connected to Amazon Web Services, Inc. or any of its subsidiaries. All references to AWS services such as "Amazon EC2," "S3," "IAM," and others are used solely for educational purposes. The content of this app, including questions and explanations, has been independently created by our team and is protected under the doctrine of fair use. --- Auto-renewable subscriptions are available from the App Store for AWS Certification Prep. โ€ข 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. โ€ข Account will be charged for renewal within 24-hours prior to the end of the current period โ€ข 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://aws.hubtests.com/terms Privacy Policy: https://aws.hubtests.com/privacy

Screenshots

Data Engineer Cert Prep3 screens
AWS Knowledge Test4 screens

Verdict

The call

The clearest difference is device support: Data Engineer Cert Prep at 3 against AWS Knowledge Test's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Data Engineer Cert Prep sells 1 one-off in-app purchase and AWS Knowledge Test sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Data Engineer Cert Prep ships an update every 2 months, AWS Knowledge Test every 5 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard1 real difference ยท 5 level
Data Engineer Cert Prep versus AWS Knowledge Test: the parameters behind the verdict, then further details
ParameterData Engineer Cert PrepAWS Knowledge Test
PriceFreeFree
Update frequencyEvery 2 monthsEvery 5 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac โ€” betteriPhone
Requires iOS16.016.0
Further details โ€” not scored
Size1 MB13 MB
Age rating4+4+
DeveloperDjamgaTech CorpCargo Teleport Inc

In-app purchases

1 purchases

Data Engineer Cert Prep

One-time1
  • 50 More Questions$4.99
2 purchases

AWS Knowledge Test

Subscriptions1
  • Premium monthly subscription$9.991 Month
One-time1
  • Lifetime version$24.99

Questions

Is Data Engineer Cert Prep free?
Data Engineer Cert Prep is free to download, with in-app purchases available.
Is AWS Knowledge Test free?
AWS Knowledge Test is free to download, with in-app purchases available.
Do Data Engineer Cert Prep or AWS Knowledge Test have ads?
Neither Data Engineer Cert Prep nor AWS Knowledge Test shows ads.
Which is updated more often, Data Engineer Cert Prep or AWS Knowledge Test?
Data Engineer Cert Prep ships an update every 2 months, and AWS Knowledge Test every 5 weeks. Most recently, Data Engineer Cert Prep was updated on November 4, 2026 and AWS Knowledge Test on October 30, 2026.

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