Comparison

Data Engineer Exam Prep vs Data_Engineering

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

Head to head
About

Data Engineer Exam Prep

Features
Read full description

Study on your phone. Continue on desktop. Use your phone on the move and a tablet or desktop when you want more room to study. Connect the same StudyCert account to continue your learning in the app and on the desktop web. Prepare for Google Cloud Professional Data Engineer with 559 practice questions and 110 key terms. Study coverage · 5 areas • Designing data processing systems • Ingesting and processing the data • Storing the data • Preparing and using data for analysis • Maintaining and automating data workloads 1. Build your foundation with key terms Use flashcards to learn meanings, exam context and selection cues. Mark terms as known or not yet known, then revisit unstudied or unfamiliar cards. Edit card content to suit your learning and restore the original when needed. 2. Practice and understand each answer Study in 50-question sets, by domain or by difficulty. Work through single- and multiple-choice questions, then read the explanation for the answer and each option. Choose all, unfinished or wrong questions; shuffle questions and choices; use a study timer; and resume where you left off. 3. Review mistakes and uncertain concepts Collect questions marked for review, recent errors and repeated mistakes. Filter by cumulative wrong-answer count and focus on weaker domains or difficulty levels. The glossary report connects your known/not-yet records with accuracy on related questions. 4. Check your preparation with a mock exam Practice time management with 50 questions in 120 minutes. Change answers before submission, resume a saved exam and receive grading when time expires. Afterwards, see correct, wrong and unanswered counts, your score and domain results, then revisit mistakes. Tools that fit your study routine Optional audio study reads terms and meanings aloud. Choose whether to include exam context and selection cues, set repeats and pauses, and control playback with the mini player. A study calendar, learning streaks, weekly goals, reminders for unmet goals and light, dark or system themes support your routine. Learning records are managed for each supported language. Some features require paid access. Check the included features and price on the purchase screen. Purchase restoration is supported. This is an independent study aid, not an official, affiliated or endorsed app of any exam administrator or certification body. Exam names and trademarks belong to their respective owners.

About

Data_Engineering

Features
Read full description

Become a data engineer—starting exactly where you are. Data_Engineering is a complete interactive learning environment for iPhone, iPad, and Mac. Begin with basic arithmetic, first Python, files, SQL, and databases. Progress into production pipelines, data modeling, warehouses, Airflow, dbt, Spark, Kafka, cloud platforms, quality, governance, observability, and principal-level architecture. LEARN BY DOING • 40 structured courses from beginner to advanced • 400 substantive interactive lessons • 140 editable, syntax-highlighted code labs • 100 quizzes with validation and explanations • 80 architecture decisions based on real trade-offs • 80 guided concept exercises • Progressive hints that help without giving the answer away BUILD A PORTFOLIO Complete 40 practical data engineering projects: 12 Beginner, 14 Intermediate, and 14 Advanced. Every build includes an editable SQL, Python, YAML, or architecture workspace, four milestones, local checks, and a concrete outcome you can explain in an interview. YOUR PRIVATE DATA ENGINEERING TUTOR Ask a question from any lesson or project. Tutor Core can begin with basic arithmetic, define every new term, and work toward deep production trade-offs. Offline Core is included and never sends questions anywhere. Compatible devices can add private Apple on-device generation. External providers are always optional. WATCH YOUR DATA PLATFORM TAKE SHAPE Every completed lesson, course, and project milestone advances a living data-platform construction scene—from its first frame through ingestion, transformations, integration, and operational control planes. DESIGNED FOR SERIOUS PROGRESS Earn XP, build streaks, bookmark material, track role readiness, choose daily goals, switch between light and dark interfaces, and move naturally among iPhone, iPad, and Mac. SUBSCRIPTION Data_Engineering Pro includes a 14-day free introductory trial for eligible new subscribers, then renews monthly at the price shown in the app. Payment is charged to your Apple Account after confirmation. The subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Apple Account subscription settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://github.com/lukekevinmclaughlin-oss/Data_Engineering/blob/main/PRIVACY.md

Screenshots

Data Engineer Exam Prep4 screens
Data_Engineering4 screens

Verdict

The call

The clearest difference is iOS requirement: Data Engineer Exam Prep at 15.1 against Data_Engineering's 17.0. On price, ads, 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. Data Engineer Exam Prep sells 1 one-off in-app purchase and Data_Engineering sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 5 level
Data Engineer Exam Prep versus Data_Engineering: the parameters behind the verdict, then further details
ParameterData Engineer Exam PrepData_Engineering
PriceFreeFree
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.1 — better17.0
Further details — not scored
Size106 MB5 MB
Age rating4+4+
DeveloperCHOI SEONGMINLuke Mclaughlin

In-app purchases

1 purchases

Data Engineer Exam Prep

One-time1
  • Lifetime Access$4.99
1 purchases

Data_Engineering

Subscriptions1
  • Data_Engineering Pro14 Days trial$1.991 Month

Questions

Is Data Engineer Exam Prep free?
Data Engineer Exam Prep is free to download, with in-app purchases available.
Is Data_Engineering free?
Data_Engineering is free to download, with in-app purchases available.
Do Data Engineer Exam Prep or Data_Engineering have ads?
Neither Data Engineer Exam Prep nor Data_Engineering shows ads.

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