Comparison

DSA Master vs Counting and Probability

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

Head to head
About

DSA Master

Master algorithms and data structures with interactive visualizations, executable code, and practice challenges. Supports multiple programming languages and offers progress tracking for technical interview preparation.

Highlights
  • Interactive visualizations
  • Live code execution
  • Multi-language support
  • Practice challenges
  • Progress tracking
  • Algorithm animations
Features
Read full description

Master algorithms and data structures with a comprehensive learning platform for computer science students, software engineers, and technical interview preparation. COMPREHENSIVE LEARNING PLATFORM Explore 50+ data structures and algorithms with interactive visualizations, executable code examples, and hands-on practice challenges. From fundamental arrays and linked lists to advanced graph algorithms. INTERACTIVE CODE EXECUTION • Live Code Playground - Write, edit, and execute code in the app • Multi-Language Support - Run code in Python, JavaScript, Java, C++, Kotlin, Dart, and Go • Real-Time Execution Results - See output, errors, and execution time • Syntax Highlighting - Professional code editor with language-specific highlighting • Code Copy & Share - Easily copy code examples or share ANIMATED ALGORITHM VISUALIZATIONS • Step-by-Step Animations - Watch algorithms execute with detailed animated visualizations • Interactive Controls - Play, pause, replay, and control animation speed • Full-Screen Mode - Immersive visualization experience • Visual Data Flow - See how data structures transform during algorithm execution • Multiple Visualization Types - Sorting, searching, tree traversal, graph algorithms COMPREHENSIVE CODE EXAMPLES • 8 Programming Languages - Learn from implementations in Python, JavaScript, Java, C++, Kotlin, Dart, Go, and more • Production-Ready Code - Well-structured, commented code examples • Language Comparison - Compare implementations across different languages • Copy to Playground - Instantly load examples into the code playground • Complexity Analysis - Detailed time and space complexity analysis MODERN INTERFACE & NAVIGATION • Topic Detail Pages - Comprehensive views with Overview, Code, and Visualize sections • Advanced Search & Filtering - Find topics by category, difficulty, or learning path • Smart Recommendations - Personalized topic suggestions • Bookmarks & Notes - Save favorite topics and add personal notes PROGRESS TRACKING & ANALYTICS • Learning Analytics - Track topics completed, challenges solved, and study time • Achievement System - Unlock achievements as you progress • Study Streaks - Build consistent learning habits with daily streak tracking • Study Goals - Set and monitor daily and weekly learning objectives • Performance Insights - Detailed analytics on learning patterns PRACTICE & CHALLENGES • Daily Challenges - New coding challenges every day with varying difficulty levels • Practice Problems - Extensive collection of problems to test understanding • Difficulty Levels - Problems categorized as Easy, Medium, and Hard • Challenge Tracking - Monitor completion rate and improvement COMPREHENSIVE CONTENT LIBRARY Data Structures: Arrays, Dynamic Arrays, Linked Lists, Stacks, Queues, Deques, Hash Tables, Trees (Binary, BST, AVL, Red-Black, Segment, Fenwick), Heaps, Tries, Suffix Trees, Graphs Algorithms: Sorting (Bubble, Selection, Insertion, Merge, Quick, Heap, Topological), Searching (Linear, Binary), Graph Algorithms (DFS, BFS, Dijkstra's, Bellman-Ford, Floyd-Warshall, Kruskal's, Prim's), String Matching (KMP, Rabin-Karp), Tree Traversal ADDITIONAL FEATURES • Offline Access - All content available offline for learning anywhere • Dark Mode Support - Comfortable studying experience in any lighting • Time Complexity Charts - Visual comparisons of algorithm performance • Related Topics - Discover connected concepts and build understanding • Accessibility - Full VoiceOver support and accessibility features • Computer Science Students - Master fundamentals and advanced topics • Software Engineers - Strengthen algorithmic thinking and problem-solving • Technical Interview Preparation - Comprehensive coverage of interview questions • Self-Learners - Structured learning path from beginner to expert • Competitive Programmers - Advanced algorithms and optimization techniques

About

Counting and Probability

Access a curated collection of math competition problems focused on counting and probability. This app provides detailed solutions, bookmarking features for review, and note-taking capabilities to aid your study.

Highlights
  • Math competition problem collection
  • Detailed solutions provided
  • Bookmark problems for review
  • Note-taking for study
  • Organized problem collection
Features
Read full description

The subject of counting and probability is a challenging in math competitions for math learners. This APP collects the math competition problems on various levels in a organized way and provide solutions to all the problems. The problems can be bookmarked for reviews and notes can be written for the study.

Screenshots

DSA Master4 screens
Counting and Probability4 screens

Verdict

The call

The clearest difference is rating: Counting and Probability at 5.0 against DSA Master's 4.2. Counting and Probability also leads on in-app purchases (none vs 1) and ads (none vs shown). DSA Master's advantage is update cadence (weekly vs every 8 months) and ratings volume (35 vs 7). On price 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. DSA Master sells 1 one-off in-app purchase. Counting and Probability asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Counting and Probability holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: DSA Master has 35 ratings behind it against 7, so its average is the more settled of the two.

UpkeepUpdate frequency

DSA Master ships an update weekly, Counting and Probability every 8 months. The most recent releases landed on September 22, 2026 and September 28, 2026 respectively.

Scorecard7 real differences · 3 level
DSA Master versus Counting and Probability: the parameters behind the verdict, then further details
ParameterDSA MasterCounting and Probability
PriceFreeFree
Rating4.2 (35 ratings)5.0 (7 ratings) — better
Positive reviews12.5% of reviews—
Number of ratings35 — better7
Update frequencyWeekly — betterEvery 8 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.213.0 — better
Further details — not scored
Size150 MB8 MB
Age rating4+4+
DeveloperAlok SinghDEEPPATH LLC

Customer experience

DSA Master

All ratings35 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews8 reviews
Positive12.5%
Neutral0.0%
Negative87.5%

Counting and Probability

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

DSA Master

One-time1
  • Remove Ads$1.99
None

Counting and Probability

No in-app purchases

Questions

Is DSA Master free?
DSA Master is free to download, with in-app purchases available.
Is Counting and Probability free?
Counting and Probability is free to download, with no in-app purchases.
Which has better reviews, DSA Master or Counting and Probability?
Counting and Probability is rated higher. DSA Master averages 4.2 out of 5 from 35 ratings, while Counting and Probability averages 5.0 from 7 ratings.
Do DSA Master or Counting and Probability have ads?
DSA Master shows ads; Counting and Probability does not.
Which is updated more often, DSA Master or Counting and Probability?
DSA Master ships an update weekly, and Counting and Probability every 8 months. Most recently, DSA Master was updated on September 22, 2026 and Counting and Probability on September 28, 2026.

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