# Computational Complexity vs Data Structure Display

The clearest difference is review sentiment: Computational Complexity at 100% against Data Structure Display's 62%. Computational Complexity also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Data Structure Display's advantage is ratings volume (676 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Data Structure Display sells 1 one-off in-app purchase. Computational Complexity asks for nothing beyond the download.

Computational Complexity holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Data Structure Display has 676 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Computational Complexity's written reviews are positive against 62% of Data Structure Display's.

Computational Complexity ships an update every 3 months, Data Structure Display every 5 months. The most recent releases landed on June 5, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Computational Complexity | Data Structure Display |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/computational-complexity/id788314470/reviews)** | [4.5 (676 ratings)](https://appshunter.io/ios/app/data-structure-display/id1455489695/reviews) |
| Number of ratings | 4 | **676** |
| Positive reviews | **100.0% of reviews** | 61.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 8 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Madden](https://appshunter.io/developer/857040151) | [Jinan Matrix Information Technology Co., Ltd.](https://appshunter.io/developer/1009091575) |

## What reviewers say

### Computational Complexity

[App page](https://appshunter.io/ios/app/computational-complexity/id788314470)

Explore fundamental concepts of computational complexity with interactive graphs and live sorting algorithm demonstrations. Developed by academics, this app offers a fun and educational way to visualize algorithmic growth and efficiency.

**Highlights:** Interactive Big-O function graphs, Live sorting algorithm demonstrations, Visualizes algorithmic growth, Source code available on Github, Educational tool for computer science

**Features:** macOS Compatibility

**In-app purchases:** none


### Data Structure Display

[App page](https://appshunter.io/ios/app/data-structure-display/id1455489695)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all data structures | $2.99 | one-time |

**What reviewers like**

- 📚 Excellent for DSA learning and studying
- ✨ Interactive components and pseudo code quality
- 👍 Good reference material for beginners
- 🎓 Unique educational content

**What reviewers complain about**

- 🔒 90% of content locked behind $2.99 paywall
- 📖 Incomplete coverage of data structures
- ✍️ Poor grammar and spelling
- 📱 No dark mode support on macOS
- 🔔 Excessive review prompts

**Reported bugs**

- Aggressive review request frequency
- Inconsistent dark mode functionality between iOS and macOS

**Requested features**

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


## Frequently asked questions

### Is Computational Complexity free?

Computational Complexity is free to download, with no in-app purchases.

### Is Data Structure Display free?

Data Structure Display is free to download, with in-app purchases available.

### Which has better reviews, Computational Complexity or Data Structure Display?

Computational Complexity is rated higher. Computational Complexity averages 5.0 out of 5 from 4 ratings, while Data Structure Display averages 4.5 from 676 ratings.

### Do Computational Complexity or Data Structure Display have ads?

Neither Computational Complexity nor Data Structure Display shows ads.

### Which is updated more often, Computational Complexity or Data Structure Display?

Computational Complexity ships an update every 3 months, and Data Structure Display every 5 months. Most recently, Computational Complexity was updated on June 5, 2026 and Data Structure Display on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*