# Data Structures and Algorithms vs Altab AI

The clearest difference is update cadence: Altab AI at daily against Data Structures and Algorithms's every 10 days. Data Structures and Algorithms's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Data Structures and Algorithms sells 1 one-off in-app purchase and Altab AI sells 2 in-app purchases, starting at $69.99 per year. Whichever you choose, the download price is not the number that matters.

Data Structures and Algorithms ships an update every 10 days, Altab AI daily. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Data Structures and Algorithms | Altab AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/altab-ai/id6802139958/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | — | Freemium |
| Size | 36 MB | 80 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [子健 高](https://appshunter.io/developer/1791450219) | [IDK Studios, Inc.](https://appshunter.io/developer/6801950751) |

## What reviewers say

### Data Structures and Algorithms

[App page](https://appshunter.io/ios/app/data-structures-and-algorithms/id6783425095)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DSA | $2.99 | one-time |


### Altab AI

[App page](https://appshunter.io/ios/app/altab-ai/id6802139958)

Learn practical software engineering skills by building your own project. Get step-by-step guidance, short lessons, and written feedback to go from theory to a senior developer role.

**Highlights:** Build your own project from day one, Step-by-step roadmap, Short, focused lessons, Written feedback on your work, Spaced review for retention, Daily habit building

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Altab Premium Annual | $69.99 | per year |
| Altab Premium Monthly | $79.99 | per month |


## Frequently asked questions

### Is Data Structures and Algorithms free?

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

### Is Altab AI free?

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

### Do Data Structures and Algorithms or Altab AI have ads?

Neither Data Structures and Algorithms nor Altab AI shows ads.

### Which is updated more often, Data Structures and Algorithms or Altab AI?

Data Structures and Algorithms ships an update every 10 days, and Altab AI daily. Most recently, Data Structures and Algorithms was updated on October 28, 2026 and Altab AI on October 29, 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.*