# Data Structure Display vs LeetCards

The clearest difference is rating: Data Structure Display at 4.5 against LeetCards's 1.0. Data Structure Display also leads on ratings volume (676 vs 4). LeetCards's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Data Structure Display sells 1 one-off in-app purchase and LeetCards sells 3 in-app purchases, starting at $9.00 per month. Whichever you choose, the download price is not the number that matters.

Data Structure Display holds the better App Store score, 4.5 against 1.0. 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.

Data Structure Display ships an update every 5 months, LeetCards every 3 weeks. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Data Structure Display | LeetCards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (676 ratings)](https://appshunter.io/ios/app/data-structure-display/id1455489695/reviews)** | [1.0 (4 ratings)](https://appshunter.io/ios/app/leetcards/id6502571848/reviews) |
| Number of ratings | **676** | 4 |
| Positive reviews | 61.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 41 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jinan Matrix Information Technology Co., Ltd.](https://appshunter.io/developer/1009091575) | [Kittichote Kamalapirat](https://appshunter.io/developer/1643959840) |

## 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


### LeetCards

[App page](https://appshunter.io/ios/app/leetcards/id6502571848)

Master coding interview questions with spaced repetition and curated problem sets. Track your progress, take custom notes, and compete on leaderboards to optimize your learning and land your dream job.

**Highlights:** Spaced repetition for DSA concepts, Curated problem sets (Grind 75, Blind 75), Progress tracking (streaks, XP), Custom notes for problems, Leaderboard for competition

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LeetCards | $9.00 | per month |
| LeetCards | $59.00 | per year |
| LeetCards | $89.00 | one-time |


## Frequently asked questions

### Is Data Structure Display free?

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

### Is LeetCards free?

LeetCards is free to download, with in-app purchases available.

### Which has better reviews, Data Structure Display or LeetCards?

Data Structure Display is rated higher. Data Structure Display averages 4.5 out of 5 from 676 ratings, while LeetCards averages 1.0 from 4 ratings.

### Do Data Structure Display or LeetCards have ads?

Neither Data Structure Display nor LeetCards shows ads.

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

Data Structure Display ships an update every 5 months, and LeetCards every 3 weeks. Most recently, Data Structure Display was updated on October 13, 2026 and LeetCards on October 11, 2026.

---

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