Comparison

Data Structure Display vs Java Data Structures & Algo

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

Head to head
About

Data Structure Display

Explore and learn data structures through dynamic debugging and visual observation of changes. This app covers linear structures, trees, graphs, and recursive algorithms like the Tower of Hanoi, offering interactive learning experiences.

Highlights
  • Dynamic data structure debugging
  • Visual observation of data structure changes
  • Learn linear structures (arrays, lists, queues, stacks)
  • Explore tree structures (binary, AVL, red-black, heap)
  • Understand graph structures and algorithms
  • Debug recursive algorithms like Tower of Hanoi
Features
Read full description

A novel data structure learning app, the most significant feature is that you can dynamically debug the data structure in this app, and visually observe the changes in the data structure during the operation. In this app you can learn the following data structures: 1. Linear structures, including arrays, linked lists, queues, stacks. Linear structures are the basis for other advanced data structures, as fine as advanced algorithms. 2. Tree structures, including binary tree, binary search tree, AVL tree, red-black tree, and heap. In this app, you can dynamically debug three traversals of the binary tree (including non-recursive traversal implementations), searching in the tree, balance adjustments in the AVL tree and red-black tree, and heap sorting. Give you the ability of handwritten red-black trees. 3. Graph structure, including the adjacency list storage representation of the graph structure, depth-first search and breadth-first search, finding the Euler path in the graph, topological sorting, maximum connected components, minimum spanning tree problem, and shortest single source Path problem. It also provides dynamic debugging of these classic graph algorithms. 4. The data structure introductory class will talk about the problem of the Tower of Hanoi. The algorithm that solves this problem is often recursive. This app provides dynamic debugging of the Tower of Hanoi problem, so you can no longer be confused about the recursive calls of the Tower of Hanoi.

About

Java Data Structures & Algo

Features
Read full description

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: • English, French, German, Italian, Portuguese, Russian, and Spanish — study in your native language! What You'll Learn: • Algorithm fundamentals and complexity analysis • Arrays, strings, linked lists, stacks, and queues • Hash tables, sets, trees, and graphs • Sorting algorithms: insertion, merge, and quicksort • Graph algorithms: BFS, DFS, Dijkstra's, and Prim's • Dynamic programming, greedy algorithms, and backtracking Complete Learning Experience: • 23 structured chapters from beginner to advanced • Step-by-step tutorials with clear explanations • Complete, runnable Java code examples • Interactive quiz questions to test your knowledge User-Friendly Features: • Dark and light theme options • Clean, distraction-free interface Perfect for: • Complete beginners with no prior DSA experience • Students preparing for coding interviews • Computer science students learning algorithms • Developers strengthening their problem-solving skills • Self-learners building strong programming foundations Start your DSA mastery journey today - from basic concepts to interview-ready problem solving!

Screenshots

Data Structure Display4 screens
Java Data Structures & Algo4 screens

Verdict

The call

The clearest difference is in-app purchases: Java Data Structures & Algo at none against Data Structure Display's 1. Java Data Structures & Algo also leads on update cadence (every 2 months vs every 5 months). Data Structure Display's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 17.0). On price and ads 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. Data Structure Display sells 1 one-off in-app purchase. Java Data Structures & Algo asks for nothing beyond the download.

UpkeepUpdate frequency

Data Structure Display ships an update every 5 months, Java Data Structures & Algo every 2 months. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
Data Structure Display versus Java Data Structures & Algo: the parameters behind the verdict, then further details
ParameterData Structure DisplayJava Data Structures & Algo
PriceFreeFree
Rating4.5 (678 ratings) — better—
Positive reviews61.9% of reviews—
Number of ratings678 — better—
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size8 MB18 MB
Age rating4+4+
DeveloperJinan Matrix Information Technology Co., Ltd.ALG Software Lab

Bugs and requests

Data Structure Display

Reported bugs

2 issues
  • Aggressive review request frequency
  • Inconsistent dark mode functionality between iOS and macOS

Requested features

4 requests
  • Dark mode implementation
  • Comprehensive coverage of all data structure variants
  • More practical exercises and problems
  • Ad-supported free tier instead of paywall

Java Data Structures & Algo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Data Structure Display

One-time1
  • Unlock all data structures$2.99
None

Java Data Structures & Algo

No in-app purchases

Questions

Is Data Structure Display free?
Data Structure Display is free to download, with in-app purchases available.
Is Java Data Structures & Algo free?
Java Data Structures & Algo is free to download, with no in-app purchases.
Do Data Structure Display or Java Data Structures & Algo have ads?
Neither Data Structure Display nor Java Data Structures & Algo shows ads.
Which is updated more often, Data Structure Display or Java Data Structures & Algo?
Data Structure Display ships an update every 5 months, and Java Data Structures & Algo every 2 months. Most recently, Data Structure Display was updated on November 2, 2026 and Java Data Structures & Algo on October 28, 2026.

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