# Data Structure Display vs Roots Master

The clearest difference is price: Data Structure Display at Free against Roots Master's $8.99. Data Structure Display also leads on iOS requirement (13.0 vs 15.1). Roots Master's advantage is in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

Data Structure Display is free to download; Roots Master costs $8.99 up front. Data Structure Display sells 1 one-off in-app purchase. Roots Master asks for nothing beyond the download.

Data Structure Display ships an update every 5 months, Roots Master every 9 months. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Data Structure Display | Roots Master |
| --- | --- | --- |
| Price | **Free** | $8.99 |
| Rating | **[4.5 (676 ratings)](https://appshunter.io/ios/app/data-structure-display/id1455489695/reviews)** | — |
| Number of ratings | **676** | — |
| Positive reviews | 61.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 93 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jinan Matrix Information Technology Co., Ltd.](https://appshunter.io/developer/1009091575) | [SimTeCon GmbH](https://appshunter.io/developer/1761797043) |

## What reviewers say

### 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


### Roots Master

[App page](https://appshunter.io/ios/app/roots-master/id6739428678)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Data Structure Display free?

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

### Is Roots Master free?

Roots Master costs $8.99, with no in-app purchases.

### Do Data Structure Display or Roots Master have ads?

Neither Data Structure Display nor Roots Master shows ads.

### Which is updated more often, Data Structure Display or Roots Master?

Data Structure Display ships an update every 5 months, and Roots Master every 9 months. Most recently, Data Structure Display was updated on October 13, 2026 and Roots Master on October 9, 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.*