# Learn Data Structures vs Algo Demo

The clearest difference is in-app purchases: Algo Demo at none against Learn Data Structures's 1. Algo Demo also leads on update cadence (every 4 months vs every 16 months) and iOS requirement (13.0 vs 15.1). Learn Data Structures's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Learn Data Structures sells 1 one-off in-app purchase. Algo Demo asks for nothing beyond the download.

Learn Data Structures ships an update every 16 months, Algo Demo every 4 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Learn Data Structures | Algo Demo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 4 months** |
| Size | 28 MB | 36 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ghumman Tech LLC](https://appshunter.io/developer/1671347750) | [zhuo zeng](https://appshunter.io/developer/1435764582) |

## What reviewers say

### Learn Data Structures

[App page](https://appshunter.io/ios/app/learn-data-structures/id6446444404)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


### Algo Demo

[App page](https://appshunter.io/ios/app/algo-demo/id6746090108)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn Data Structures free?

Learn Data Structures is free to download, with in-app purchases available.

### Is Algo Demo free?

Algo Demo is free to download, with no in-app purchases.

### Do Learn Data Structures or Algo Demo have ads?

Algo Demo shows ads; Learn Data Structures does not.

### Which is updated more often, Learn Data Structures or Algo Demo?

Learn Data Structures ships an update every 16 months, and Algo Demo every 4 months. Most recently, Learn Data Structures was updated on September 9, 2026 and Algo Demo on September 15, 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.*