Data Engineer Cert Prep vs NCA
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Data Engineer Cert Prep
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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.
NCA
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PASS YOUR NVIDIA NCA-AIIO: AI INFRASTRUCTURE AND OPERATIONS EXAM 500+ practice questions 5-minute study sessions Track your progress Remove mastered questions Text-to-speech support Dark mode available WHY GET CERTIFIED? Certified AI infrastructure professionals earn up to $203K annually (Skillsoft 2024). NCA-AIIO validates foundational knowledge of AI computing infrastructure and operations in enterprise environments. WHAT YOU'LL MASTER: NVIDIA software stack for AI environments Training vs inference architecture requirements AI, machine learning, and deep learning concepts GPU vs CPU architectures and acceleration NVIDIA TensorRT and GPU Operator DGX SuperPOD and data center platforms Bluefield DPU for workload offloading InfiniBand and NVSwitch networking Kubernetes orchestration and job scheduling Data analysis and visualization techniques Model evaluation with statistical metrics Energy-efficient computing strategies Cloud AI deployment considerations MLOps and AI lifecycle management STUDY ANYWHERE: Coffee breaks. Commutes. Lunch hours. Turn dead time into AI infrastructure expertise. Download now. Pass your exam. Master NVIDIA AI infrastructure.
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Verdict
The clearest difference is in-app purchases: NCA at none against Data Engineer Cert Prep's 1. On price, update cadence, ads and device support 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
Both are free to download. Data Engineer Cert Prep sells 1 one-off in-app purchase. NCA asks for nothing beyond the download.
Data Engineer Cert Prep ships an update every 2 months, NCA every 3 months. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.
| Parameter | Data Engineer Cert Prep | NCA |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 1 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | DjamgaTech Corp | Davy Raitt |
In-app purchases
Data Engineer Cert Prep
- 50 More Questions$4.99
NCA
No in-app purchases
Questions
Is Data Engineer Cert Prep free?
Is NCA free?
Do Data Engineer Cert Prep or NCA have ads?
Which is updated more often, Data Engineer Cert Prep or NCA?
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