Comparison

Learn DBMS vs D426 Mastery

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

Head to head
About

Learn DBMS

Features
Read full description

This app is a great resource to learn about Database Management Systems. The app is engineered to make users perfect understanding common Database Management Systems questions by studying for a very short amount of time. Audio functionality and bookmarking is available throughout the app on chapter, section, study mode and quiz modes. The app will help you learn the correct pronunciation of terminologies used in Database Management Systems using English language. Following are the main features of this app 1. Supports pronouncing Database Management Systems terminologies in English Language 2. Uses Text to Speech Engine for Audio Functionality 3. Quizzes 4. Study Mode 5. Bookmarking Study Flashcards and Quiz Questions 6. Progress Indicators for Every Chapter 7. Visualization for Overall Progress

About

D426 Mastery

Features
Read full description

Stop stressing about D426. Start mastering it. D426 Mastery is the #1 study app built specifically for WGU students preparing for the D426 Data Management Foundations Objective Assessment. Every flashcard, every quiz question, and every sample database is designed to help you pass your OA with confidence. SPACED REPETITION FLASHCARDS - 400+ flashcards covering every D426 competency - Anki-style SM-2 algorithm that adapts to your knowledge - Cards you struggle with show up more often -- cards you know fade away - Search, browse, and filter by topic MOCK OA EXAMS - 200+ exam-style multiple choice questions - Randomized answer positions so you actually learn, not memorize patterns - Review every missed question with the correct answer and detailed explanation - Topic-based quizzes to target your weak areas REAL SQL PLAYGROUND - Write and execute actual SQL queries -- not just theory - 5 realistic sample databases: University, Sales, Hospital, Employee, Inventory - Syntax highlighting, formatted result tables, and query history - Practice DDL and DML commands against real data INTERACTIVE ER DIAGRAM BUILDER - Drag-and-drop entities, attributes, and relationships - Crow's Foot notation with cardinality validation - Build and visualize database designs hands-on COMPLETE TOPIC COVERAGE - Relational Model Concepts - ER Diagrams and Crow's Foot Notation - Primary Keys and Foreign Keys - Database Normalization (1NF, 2NF, 3NF, BCNF) - SQL DDL Commands (CREATE, ALTER, DROP) - SQL DML Commands (SELECT, INSERT, UPDATE, DELETE) - Conceptual, Logical and Physical Data Models - DBMS Architecture and ACID Properties SMART PROGRESS TRACKING - Mastery percentage for every topic - Radar chart showing your strengths and weak spots - OA Readiness score -- know exactly when you're ready to test - Study streak counter and daily session timer - Detailed statistics: cards reviewed, quizzes taken, accuracy rate SEARCHABLE GLOSSARY - 90+ database terms with clear definitions - Organized by category for quick reference - Perfect for last-minute review before your OA FREE VS PREMIUM Free includes: - 50 flashcards with full spaced repetition - 1 mock OA exam per day - 1 sample SQL database - Complete glossary - Basic study statistics Premium unlocks: - All 400+ flashcards - Unlimited mock OA exams - All 5 SQL databases - Missed questions review after every quiz - OA Readiness score - Interactive ER Diagram Builder - Advanced analytics Premium is available as a monthly subscription ($7.99/month, auto-renewing) or a one-time lifetime purchase ($24.99). Monthly subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. Manage or cancel anytime in your Apple ID account settings. WORKS 100% OFFLINE No internet required. No account needed. No data leaves your device. Study anywhere -- on the bus, in bed, between classes. BUILT BY WGU STUDENTS, FOR WGU STUDENTS We know the D426 OA because we've been there. Every flashcard and quiz question is mapped to actual course competencies so you study what matters. D426 Mastery is an independent study aid and is not affiliated with, endorsed by, or sponsored by Western Governors University. Support: https://johndisalle.github.io/D426/support Terms of Service: https://johndisalle.github.io/D426/terms-of-service Privacy Policy: https://johndisalle.github.io/D426/privacy-policy

Screenshots

Learn DBMS4 screens
D426 Mastery4 screens

Verdict

The call

The clearest difference is iOS requirement: Learn DBMS at 15.1 against D426 Mastery's 17.6. On price, 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

Both are free to download. Learn DBMS sells 1 one-off in-app purchase and D426 Mastery sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference ยท 5 level
Learn DBMS versus D426 Mastery: the parameters behind the verdict, then further details
ParameterLearn DBMSD426 Mastery
PriceFreeFree
Update frequencyEvery 16 monthsโ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.1 โ€” better17.6
Further details โ€” not scored
Size28 MB4 MB
Age rating4+4+
DeveloperGhumman Tech LLCJOHN TIMOTHY DISALLE

In-app purchases

1 purchases

Learn DBMS

One-time1
  • Remove Ads$9.99
2 purchases

D426 Mastery

Subscriptions1
  • Monthly Premium$7.991 Month
One-time1
  • Lifetime Access$24.99

Questions

Is Learn DBMS free?
Learn DBMS is free to download, with in-app purchases available.
Is D426 Mastery free?
D426 Mastery is free to download, with in-app purchases available.
Do Learn DBMS or D426 Mastery have ads?
Neither Learn DBMS nor D426 Mastery shows ads.

Other comparisons