Comparison

Data Structure Display vs WonderPi

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

WonderPi

Control various robotic devices like humanoid robots, smart cars, and 6-foot robots through direct connection or LAN mode. Navigate and interact with your devices using intuitive controls and gameplay switches.

Highlights
  • Direct connection mode
  • LAN mode
  • Control humanoid robots
  • Control smart cars
  • Control 6-foot robots
  • Gameplay switches
Features
Read full description

Open the app, you can choose the direct connection mode or LAN mode to connect the device (the device types are: humanoid robot, 6-foot robot, smart car). After the connection is successful, you can click the device to enter the corresponding interface, control the device, you can control the forward and backward. Turn left and turn right. There are also various gameplay switches. Note: Direct connection mode: It is to connect directly to the hotspot of the device for communication.         LAN mode: First, pass the direct connection mode, send the account password of the LAN to the device, and let the device actively connect to the same LAN.         The mode of communication in the same LAN.

Screenshots

Data Structure Display4 screens
WonderPi4 screens

Verdict

The call

The clearest difference is rating: Data Structure Display at 4.5 against WonderPi's 3.0. Data Structure Display also leads on ratings volume (678 vs 5). WonderPi's advantage is in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 5 months). On price, ads, device support and iOS requirement 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. WonderPi asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Data Structure Display holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Data Structure Display has 678 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Data Structure Display ships an update every 5 months, WonderPi every 6 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Data Structure Display versus WonderPi: the parameters behind the verdict, then further details
ParameterData Structure DisplayWonderPi
PriceFreeFree
Rating4.5 (678 ratings) — better3.0 (5 ratings)
Positive reviews61.9% of reviews—
Number of ratings678 — better5
Update frequencyEvery 5 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size8 MB54 MB
Age rating4+4+
DeveloperJinan Matrix Information Technology Co., Ltd.Shenzhen Hiwonder Technology Co.,Ltd

Customer experience

Data Structure Display

All ratings676 ratings
Positive87.1%
Neutral2.4%
Negative10.5%
Written reviews42 reviews
Positive61.9%
Neutral2.4%
Negative35.7%

WonderPi

All ratings4 ratings
Positive25.0%
Neutral25.0%
Negative50.0%

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

WonderPi

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

WonderPi

No in-app purchases

Questions

Is Data Structure Display free?
Data Structure Display is free to download, with in-app purchases available.
Is WonderPi free?
WonderPi is free to download, with no in-app purchases.
Which has better reviews, Data Structure Display or WonderPi?
Data Structure Display is rated higher. Data Structure Display averages 4.5 out of 5 from 678 ratings, while WonderPi averages 3.0 from 5 ratings.
Do Data Structure Display or WonderPi have ads?
Neither Data Structure Display nor WonderPi shows ads.
Which is updated more often, Data Structure Display or WonderPi?
Data Structure Display ships an update every 5 months, and WonderPi every 6 weeks. Most recently, Data Structure Display was updated on October 29, 2026 and WonderPi on October 24, 2026.

Other comparisons