Comparison

Java Data Structures Pro vs FaangIQ

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

Head to head
About

Java Data Structures Pro

Features
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Master Data Structures and Algorithms using Java. Learn Data Structure and Algorithm concepts with our comprehensive tutorial app. Perfect for beginners starting their coding journey and developers preparing for technical interviews. All examples use Java. Available in 7 Languages: โ€ข English, French, German, Italian, Portuguese, Russian, and Spanish โ€” study in your native language! What You'll Learn: โ€ข Algorithm fundamentals and complexity analysis โ€ข Arrays, strings, linked lists, stacks, and queues โ€ข Hash tables, sets, trees, and graphs โ€ข Sorting algorithms: insertion, merge, and quicksort โ€ข Graph algorithms: BFS, DFS, Dijkstra's, and Prim's โ€ข Dynamic programming, greedy algorithms, and backtracking Complete Learning Experience: โ€ข 31 structured chapters from beginner to advanced โ€ข Step-by-step tutorials with clear explanations โ€ข Complete, runnable Java code examples โ€ข Interactive quiz questions to test your knowledge User-Friendly Features: โ€ข Dark and light theme options โ€ข Offline learning - no internet required โ€ข Search functionality across all content โ€ข Bookmark important topics (favorites) โ€ข Clean, distraction-free interface Perfect for: โ€ข Complete beginners with no prior DSA experience โ€ข Students preparing for coding interviews โ€ข Computer science students learning algorithms โ€ข Developers strengthening their problem-solving skills โ€ข Self-learners building strong programming foundations Start your DSA mastery journey today - from basic concepts to interview-ready problem solving!

About

FaangIQ

Features
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Master your next FAANG interview with 413+ real interview questions from Google, Amazon, Meta, Apple, Netflix, Microsoft, and Adobe. Study smarter, not harder โ€” no IDE needed. WHY FaangIQ? Unlike platforms that require a computer and IDE, FaangIQ transforms real technical interview questions into a quiz format you can practice anywhere โ€” on the train, during lunch, or before bed. Built for busy engineers who want to make every minute count. WHAT'S INSIDE - 413+ Curated Questions across 12 specialized categories - Real FAANG Interview Questions sourced from actual tech interviews - System Design (55 questions) โ€” scalability, distributed systems, architecture - Coding Logic (137 questions) โ€” algorithms, data structures, Big O notation - Technical MCQs (73 questions) โ€” Operating Systems, DBMS, Networks, OOP - Aptitude & Reasoning (90 questions) โ€” quantitative and analytical thinking - Database Management โ€” SQL, ACID, normalization, transactions - Plus: Riddles, Sequences, Word Problems for lateral thinking THREE DIFFICULTY LEVELS - Easy (137 questions): Build confidence and warm up with fundamentals - Medium (193 questions): Deepen understanding with moderate challenges - Hard (83 questions): FAANG-level difficulty for serious interview prep COMPANIES COVERED Questions sourced from real interviews at Google, Amazon, Meta (Facebook), Apple, Netflix, Microsoft, and Adobe. KEY FEATURES - Practice Mode: Get instant feedback, hints, and explanations as you learn - Test Mode: Simulate real interview conditions with no hints - Progress Tracking: See your accuracy and mastery across every category - Daily Streaks: Stay consistent and build a study habit - Detailed Explanations: Learn why each answer is correct, not just what - Offline First: No internet required โ€” all questions stored locally - Light & Dark Mode: Study comfortably day or night - Haptic Feedback: Feel every correct and incorrect answer WHO IS THIS FOR? - Software engineers preparing for FAANG interviews - CS students getting ready for campus placements - Career changers breaking into tech - Developers leveling up for senior roles - Anyone preparing for technical interviews at top companies FaangIQ is the interview prep app that fits in your pocket. No laptop needed. No subscriptions to expensive platforms. Just you, your phone, and 413+ questions standing between you and your dream job. Download now and start preparing for the interview that changes your career. Why this structure works: Section: First 3 lines Purpose: This is the only part visible before users tap "more" โ€” it's your hook Section: WHY FaangIQ? Purpose: Differentiates you from competitors immediately Section: WHAT'S INSIDE Purpose: Specific numbers build trust and credibility Section: THREE DIFFICULTY LEVELS Purpose: Shows structured progression Section: KEY FEATURES Purpose: Sells the experience, not just content Section: WHO IS THIS FOR? Purpose: Users see themselves in the list โ€” increases conversion

Screenshots

Java Data Structures Pro4 screens
FaangIQ4 screens

Verdict

The call

The clearest difference is price: FaangIQ at Free against Java Data Structures Pro's $4.99. FaangIQ also leads on update cadence (weekly vs every 4 months). On ads, in-app purchases, device support and iOS requirement 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

FaangIQ is free to download; Java Data Structures Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Java Data Structures Pro ships an update every 4 months, FaangIQ weekly. The most recent releases landed on September 16, 2026 and September 11, 2026 respectively.

Scorecard2 real differences ยท 4 level
Java Data Structures Pro versus FaangIQ: the parameters behind the verdict, then further details
ParameterJava Data Structures ProFaangIQ
Price$4.99Free โ€” better
Update frequencyEvery 4 monthsWeekly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.015.1 โ€” better
Further details โ€” not scored
Size18 MB30 MB
Age rating4+4+
DeveloperALG Software LabYubraj Khatri

In-app purchases

None

Java Data Structures Pro

No in-app purchases

None

FaangIQ

No in-app purchases

Questions

Is Java Data Structures Pro free?
Java Data Structures Pro costs $4.99, with no in-app purchases.
Is FaangIQ free?
FaangIQ is free to download, with no in-app purchases.
Do Java Data Structures Pro or FaangIQ have ads?
Neither Java Data Structures Pro nor FaangIQ shows ads.
Which is updated more often, Java Data Structures Pro or FaangIQ?
Java Data Structures Pro ships an update every 4 months, and FaangIQ weekly. Most recently, Java Data Structures Pro was updated on September 16, 2026 and FaangIQ on September 11, 2026.

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