Comparison

Learn PostgreSQL Offline vs PDE Data Engineer Exam Prep

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

Head to head
About

Learn PostgreSQL Offline

Features
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PostgreSQL is a popular relational database management system (RDBMS). Our PostgreSQL tutorial provides basic and advanced concepts of PostgreSQL. In this tutorial, we are going to learn all the topics of PostgreSQL language, such as create a database, drop a database, select database, select table, update a record, create a table, delete record, drop table, triggers, functions, insert the record, procedures, cursors, etc. - What is PostgreSQL Database? PostgreSQL is an ORDBMS [Open-Source Object-Relational Database Management System]. It is used to store data securely; supporting best practices, and allow recovering them when the request is processed. - History of PostgreSQL PostgreSQL was developed by the PostgreSQL Global Development Group, which is led by a computer science professor named Michael Stonebraker at the University of California, Berkeley [UCB]. The professor's stonebreaker started in 1986 as a follow-up project and a post-Ingres project to overcome the problems of the existing database system. Initially, it was called as Postgres, but in 1996, the project was renamed to PostgreSQL. Then again, in 2007, they did some analysis, and the development team decided to preserve the name as PostgreSQL. And now, it is the most innovative open-source database available in the market.

About

PDE Data Engineer Exam Prep

Features
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PASS YOUR PROFESSIONAL DATA ENGINEER 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 Google Cloud data engineers earn up to $203K annually (Skillsoft 2024). Professional Data Engineer validates expertise in designing, building, and optimizing data infrastructure for enterprise applications. WHAT YOU'LL MASTER: Data security with IAM, encryption, and key management Data governance with project and dataset architecture Data pipelines with Dataflow, Apache Beam, and Cloud Data Fusion Pipeline orchestration with Cloud Composer and Workflows Storage solutions with BigQuery, BigLake, AlloyDB, Bigtable, and Spanner Data warehouse design and normalization strategies Data lakes with Dataplex and cost controls Batch and streaming transformations with windowing BigQuery ML for feature engineering and model training RAG preparation with unstructured data embeddings Analytics Hub for data sharing Performance optimization and cost management Disaster recovery and fault tolerance strategies STUDY ANYWHERE: Coffee breaks. Commutes. Lunch hours. Turn dead time into data engineering expertise. Download now. Pass your exam. Master Google Cloud data engineering.

Screenshots

Learn PostgreSQL Offline4 screens
PDE Data Engineer Exam Prep3 screens

Verdict

The call

The clearest difference is price: PDE Data Engineer Exam Prep at Free against Learn PostgreSQL Offline's $1.99. PDE Data Engineer Exam Prep also leads on update cadence (every 3 months vs every 41 months). Learn PostgreSQL Offline's advantage is iOS requirement (13.0 vs 15.0). On ads, in-app purchases 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

PDE Data Engineer Exam Prep is free to download; Learn PostgreSQL Offline costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Learn PostgreSQL Offline ships an update every 41 months, PDE Data Engineer Exam Prep every 3 months. The most recent releases landed on September 28, 2026 and September 24, 2026 respectively.

Scorecard3 real differences ยท 3 level
Learn PostgreSQL Offline versus PDE Data Engineer Exam Prep: the parameters behind the verdict, then further details
ParameterLearn PostgreSQL OfflinePDE Data Engineer Exam Prep
Price$1.99Free โ€” better
Update frequencyEvery 41 monthsEvery 3 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 โ€” better15.0
Further details โ€” not scored
Size39 MB27 MB
Age rating4+4+
DeveloperMuhammad MubeenDavy Raitt

In-app purchases

None

Learn PostgreSQL Offline

No in-app purchases

None

PDE Data Engineer Exam Prep

No in-app purchases

Questions

Is Learn PostgreSQL Offline free?
Learn PostgreSQL Offline costs $1.99, with no in-app purchases.
Is PDE Data Engineer Exam Prep free?
PDE Data Engineer Exam Prep is free to download, with no in-app purchases.
Do Learn PostgreSQL Offline or PDE Data Engineer Exam Prep have ads?
Neither Learn PostgreSQL Offline nor PDE Data Engineer Exam Prep shows ads.
Which is updated more often, Learn PostgreSQL Offline or PDE Data Engineer Exam Prep?
Learn PostgreSQL Offline ships an update every 41 months, and PDE Data Engineer Exam Prep every 3 months. Most recently, Learn PostgreSQL Offline was updated on September 28, 2026 and PDE Data Engineer Exam Prep on September 24, 2026.

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