Comparison

Java Mock Free vs Java SE 21 Developer

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

Head to head
About

Java Mock Free

Practice Java programming questions and prepare for exams and interviews. Features include bookmarking, automatic saving of strong/weak areas, and sharing options. Quizzes range from 25 to 250 questions.

Highlights
  • Offline functionality
  • Mock Java exams
  • Bookmark favorite questions
  • Automatic weak/strong question saving
  • Share questions with friends
  • Multiple quiz sizes (25-250 questions)
  • Quiz timer
Features
Read full description

Java Mock Free App gives you an efficient way to practice Java Questions , That makes you more stronger in Java Language. You can easily prepare for Java Exams and Java Interviews with this Java Mock App, It has an awesome features. It is having Bookmark Option to bookmark your favourite questions and retake the quiz with the bookmarked questions as well. It is automatically save the Questions in Which you are strong or Poor depends upon your given answers. * It has an awesome option to SHARE / ASK Questions with friend and other social networks. Features: * Works Offline Also. * Java Mock Exam. * User Friendly. * Comprehensive Questions Coverage. * Option to Bookmark a Question. * Automatically Saves your weak and strong Questions. * Sharing Question. * Attractive View. * Quiz timer also available Content List: * 25 Questions Quiz * 50 Questions Quiz * 75 Questions Quiz * 100 Questions Quiz * 150 Questions Quiz * 200 Questions Quiz * 250 Questions Quiz

About

Java SE 21 Developer

Features
Read full description

Keep studying across your phone, tablet and 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 Oracle Java SE 21 / 1Z0-830 with 500 practice questions and 149 key terms. Study coverage Ā· 10 areas • Handling Date, Time, Text, Numeric and Boolean Values • Controlling Program Flow • Using Object-Oriented Concepts in Java • Handling Exceptions • Working with Arrays and Collections • Working with Streams and Lambda expressions • Packaging and Deploying Java Code • Managing Concurrent Code Execution • Using Java I/O API • Implementing Localization 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. From the results of domain study, continue with key terms and related questions in the next domain. 3. Review mistakes and uncertain concepts Choose recent errors, review marks or repeated mistakes on the Review screen and practice them again. Check accuracy by domain alongside the terms you know or still need to learn. The glossary report shows term-learning status and accuracy on related questions together. 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. This practice feature uses the included questions and does not determine an official exam score or pass result. 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. In the mobile app, audio can continue in the background and with the screen locked. 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.

Screenshots

Java Mock Free4 screens
Java SE 21 Developer4 screens

Verdict

The call

The clearest difference is in-app purchases: Java Mock Free at none against Java SE 21 Developer's 1. Java Mock Free also leads on iOS requirement (8.0 vs 15.1). Java SE 21 Developer's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Java SE 21 Developer sells 1 one-off in-app purchase. Java Mock Free asks for nothing beyond the download.

UpkeepUpdate frequency

Java Mock Free ships an update every 3 weeks, Java SE 21 Developer weekly. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

Scorecard3 real differences Ā· 5 level
Java Mock Free versus Java SE 21 Developer: the parameters behind the verdict, then further details
ParameterJava Mock FreeJava SE 21 Developer
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.1
Further details — not scored
Size5 MB203 MB
Age rating4+4+
DeveloperHARIKRISHNA VALLAKATLACHOI SEONGMIN

In-app purchases

None

Java Mock Free

No in-app purchases

1 purchases

Java SE 21 Developer

One-time1
  • Lifetime Access$4.99

Questions

Is Java Mock Free free?
Java Mock Free is free to download, with no in-app purchases.
Is Java SE 21 Developer free?
Java SE 21 Developer is free to download, with in-app purchases available.
Do Java Mock Free or Java SE 21 Developer have ads?
Neither Java Mock Free nor Java SE 21 Developer shows ads.
Which is updated more often, Java Mock Free or Java SE 21 Developer?
Java Mock Free ships an update every 3 weeks, and Java SE 21 Developer weekly. Most recently, Java Mock Free was updated on November 2, 2026 and Java SE 21 Developer on October 28, 2026.

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