# DSA Master vs IWU Attendance

The clearest difference is rating: IWU Attendance at 5.0 against DSA Master's 4.1. IWU Attendance also leads on in-app purchases (none vs 1) and ads (none vs shown). DSA Master's advantage is ratings volume (35 vs 8). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. DSA Master sells 1 one-off in-app purchase. IWU Attendance asks for nothing beyond the download.

IWU Attendance holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 35 and 8 respectively.

DSA Master ships an update weekly, IWU Attendance fortnightly. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | DSA Master | IWU Attendance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (35 ratings)](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/iwu-attendance/id6769337868/reviews)** |
| Number of ratings | **35** | 8 |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 150 MB | 35 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alok Singh](https://appshunter.io/developer/1508795536) | [Codific](https://appshunter.io/developer/792749833) |

## What reviewers say

### DSA Master

[App page](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683)

Master algorithms and data structures with interactive visualizations, executable code, and practice challenges. Supports multiple programming languages and offers progress tracking for technical interview preparation.

**Highlights:** Interactive visualizations, Live code execution, Multi-language support, Practice challenges, Progress tracking, Algorithm animations

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

**In-app purchases (1)**

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


### IWU Attendance

[App page](https://appshunter.io/ios/app/iwu-attendance/id6769337868)

This app allows educators and students to securely track class attendance using Bluetooth or codes. It facilitates course management, participation tracking, and detailed report generation, suitable for any class size.

**Highlights:** Secure attendance tracking, Bluetooth and code entry, Course management, Student participation tracking, Detailed reports, Data export

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

**In-app purchases:** none


## Frequently asked questions

### Is DSA Master free?

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

### Is IWU Attendance free?

IWU Attendance is free to download, with no in-app purchases.

### Which has better reviews, DSA Master or IWU Attendance?

IWU Attendance is rated higher. DSA Master averages 4.1 out of 5 from 35 ratings, while IWU Attendance averages 5.0 from 8 ratings.

### Do DSA Master or IWU Attendance have ads?

DSA Master shows ads; IWU Attendance does not.

### Which is updated more often, DSA Master or IWU Attendance?

DSA Master ships an update weekly, and IWU Attendance fortnightly. Most recently, DSA Master was updated on November 3, 2026 and IWU Attendance on November 9, 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.*