# Concept vs Learn Data Structures Offline

The clearest difference is price: Concept at Free against Learn Data Structures Offline's $1.99. Concept also leads on update cadence (every 2 weeks vs every 21 months). Learn Data Structures Offline's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Concept is free to download; Learn Data Structures Offline costs $1.99 up front. Concept sells 1 in-app purchase, starting at $14.99 per month. Learn Data Structures Offline asks for nothing beyond the download.

Concept ships an update every 2 weeks, Learn Data Structures Offline every 21 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Concept | Learn Data Structures Offline |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-data-structures-offline/id6738282305/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 21 months |
| Monetization | — | Paid |
| Size | 92 MB | 38 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FLORENT IAN, SALVATORE MASDOUNIER](https://appshunter.io/developer/1719614989) | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) |

## What reviewers say

### Concept

[App page](https://appshunter.io/ios/app/concept-a-new-way-to-learn/id6473735952)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Learning Plan | $14.99 | per month |


### Learn Data Structures Offline

[App page](https://appshunter.io/ios/app/learn-data-structures-offline/id6738282305)

Master data structures with this comprehensive offline learning app. It offers simple explanations, practical examples, and interview-focused content for students and aspiring software engineers. Build a strong computer science foundation anytime, anywhere.

**Highlights:** Offline learning, Simple explanations, Practical code examples, Interview-focused content, Comprehensive tutorials, Regular updates

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

**In-app purchases:** none


## Frequently asked questions

### Is Concept free?

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

### Is Learn Data Structures Offline free?

Learn Data Structures Offline costs $1.99, with no in-app purchases.

### Do Concept or Learn Data Structures Offline have ads?

Concept shows ads; Learn Data Structures Offline does not.

### Which is updated more often, Concept or Learn Data Structures Offline?

Concept ships an update every 2 weeks, and Learn Data Structures Offline every 21 months. Most recently, Concept was updated on October 10, 2026 and Learn Data Structures Offline on October 17, 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.*