# 极客时间 vs Data Structure Display

The clearest difference is rating: Data Structure Display at 4.5 against 极客时间's 3.9. Data Structure Display also leads on ads (none vs shown). 极客时间's advantage is update cadence (every 4 weeks vs every 5 months) and iOS requirement (10.0 vs 13.0). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. 极客时间 sells 13 one-off in-app purchases and Data Structure Display sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Data Structure Display holds the better App Store score, 4.5 against 3.9. Both are backed by a comparable volume of ratings — 324 and 676 respectively. Written reviews point the same way: 59% of 极客时间's written reviews are positive against 62% of Data Structure Display's.

极客时间 ships an update every 4 weeks, Data Structure Display every 5 months. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 极客时间 | Data Structure Display |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (324 ratings)](https://appshunter.io/ios/app/id1280245865/reviews) | **[4.5 (676 ratings)](https://appshunter.io/ios/app/data-structure-display/id1455489695/reviews)** |
| Number of ratings | 324 | **676** |
| Positive reviews | 58.7% of reviews | **61.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 262 MB | 8 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [The Holding of GeekBang (Beijing) Co., Ltd](https://appshunter.io/developer/1038372718) | [Jinan Matrix Information Technology Co., Ltd.](https://appshunter.io/developer/1009091575) |

## What reviewers say

### 极客时间

[App page](https://appshunter.io/ios/app/id1280245865)

This platform offers advanced AI learning paths, covering everything from foundational algorithms to large model principles and practical AIGC applications. It also provides a comprehensive technical learning experience for developers with expert-led courses, real-world case studies, and community features.

**Highlights:** AI learning paths, Expert-led technical courses, Real-world enterprise case studies, 18 technical growth routes, Audio and video learning, Learning community, Training camps

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6G币充值 | $0.99 | one-time |
| 10G币充值 | $0.99 | one-time |
| 12G币充值 | $1.99 | one-time |
| 38G币充值 | $4.99 | one-time |
| 68G币充值 | $9.99 | one-time |
| 78G币充值 | $9.99 | one-time |
| 79G币充值 | $9.99 | one-time |
| 108G币充值 | $14.99 | one-time |
| 98G币充值 | $14.99 | one-time |
| 218G币充值 | $29.99 | one-time |
| 308G币充值 | $44.99 | one-time |
| 518G币充值 | $69.99 | one-time |
| 1598G币充值 | $229.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 💡 Great learning content
- 🚀 Productive app
- 🤩 Excellent app

**What reviewers complain about**

- 🐛 Crashes and bugs
- ⏱️ Slow loading times
- 🌙 Lack of dark mode
- 🤯 Frustrating to use

**Reported bugs**

- Purchased courses not accessible
- Inconsistent login behavior
- Playback issues (progress reset, no background play)

**Requested features**

- Page-level search
- Offline mode for content
- Improved navigation and playback controls


### 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 极客时间 free?

极客时间 is free to download, with in-app purchases available.

### Is Data Structure Display free?

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

### Which has better reviews, 极客时间 or Data Structure Display?

Data Structure Display is rated higher. 极客时间 averages 3.9 out of 5 from 324 ratings, while Data Structure Display averages 4.5 from 676 ratings.

### Do 极客时间 or Data Structure Display have ads?

极客时间 shows ads; Data Structure Display does not.

### Which is updated more often, 极客时间 or Data Structure Display?

极客时间 ships an update every 4 weeks, and Data Structure Display every 5 months. Most recently, 极客时间 was updated on October 9, 2026 and Data Structure Display on October 13, 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.*