# Algorithms HQ

> Interactive educational app for learning computer science algorithms with animations. (iPhone/iPad app by Cyril Carrez.)

- Source: https://appshunter.io/ios/app/algorithms-hq/id660610218 (this page in markdown: same URL + `.md`)
- Developer: [Cyril Carrez](https://appshunter.io/developer/660610221)
- Category: Education, Reference
- Price: Free
- Rating: 4.00/5 from 1 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 3 MB
- Languages: English
- Released: 2013-06-18
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/algorithms-hq/id660610218/reviews.md

## What is Algorithms HQ?

A fun and didactic app to learn computer science algorithms!

See how algorithms are working by watching an animation of their execution. Understand how data is manipulated as it is animated through an intuitive representation of its contents. Always know which line is executed in the pseudo-code, what are the values of the variables.
Need to quickly refresh your memory? Just use the app as a quick reference on the main characteristics of each algorithm!

Main features:
- Execute a single instruction, or undo the previous one
- Run, or rewind the algorithm until you decide to pause the execution
- Adjust the speed of the animation
- Best and worst case input data for sorting algorithms
- Change the input data: size (up to 500), maximum value or data distribution (random, sorted, many duplicates, etc.)
- For data structures, choose the next function to execute, or let a scenario choose for you, so you can see how the data structure evolves.
- Landscape or portrait orientation

This version contains the following algorithms:
Linear Data Structures:
- Linked Lists, including a view on memory
- Queue
- Stack
Sorting algorithms:
- Bubble Sort
- Cocktail Sort
- Gnome Sort
- Insertion Sort
- Quick Sort
- Selection Sort

More algorithms and more features are on the way!

## Key features

- Animated algorithm execution
- Step-by-step instruction control
- Pseudo-code and variable tracking
- Customizable input data
- Algorithm reference guide
- Data structure evolution visualization

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/algorithms-hq/id660610218/reviews.md

### 5/5 — Excellent,

*2015-07-30*

Need I say more.

### 5/5 — A wonderful way to visualize algorithms

*2014-03-19*

I love this app! It has made it easy for me to understand sorting algorithms. I truly hope the developer adds additional examples as I would love to learn more. I'd also be happy to pay to support this great app.

### 5/5 — Really Good

*2013-12-17*

The animations are superb in explaining how algorithms work. I just hope that the algorithms that are added in the future have equally superb animations. Definitely gonna keep an eye out for this one.

### 5/5 — Dr.

*2013-06-18*

Excellent app for showing how sorting algorithms work in a graphical fashion.

## Frequently asked questions about Algorithms HQ

### What algorithms are included in Algorithms HQ?

Algorithms HQ includes linear data structures like Linked Lists, Queue, and Stack, as well as sorting algorithms such as Bubble Sort, Cocktail Sort, Gnome Sort, Insertion Sort, Quick Sort, and Selection Sort. More algorithms are planned for future updates.

### How does Algorithms HQ help users learn?

It visualizes algorithm execution through animations, showing data manipulation and pseudo-code line-by-line. Users can control the speed, step through instructions, and rewind to understand how algorithms work.

### Can I customize the input data in Algorithms HQ?

Yes, you can change the input data for algorithms. This includes adjusting the size (up to 500 elements), the maximum value, and the data distribution (e.g., random, sorted, or with many duplicates).

### What devices does Algorithms HQ support?

Algorithms HQ is currently supported on iPad devices, allowing for a larger screen to visualize the algorithms and data structures effectively.

### How often is Algorithms HQ updated?

The app was last updated on April 28, 2023, with version 2023.1. The developer indicates that more algorithms and features are on the way, suggesting regular updates.

### What is the age rating for Algorithms HQ?

Algorithms HQ has an age rating of 4+, making it suitable for a wide range of learners interested in computer science concepts.

### Does Algorithms HQ have ads?

No, Algorithms HQ is ad-free, providing an uninterrupted learning experience for its users.

### What is the user sentiment for Algorithms HQ?

Based on the available data, Algorithms HQ has a rating of 4.0 stars from 1 rating, indicating a positive initial reception from users.

## Version history (last 5 releases)

### 2026.1 — 2026-05-20

Refactored the execution engine to improve performance.

### 2023.1 — 2023-04-28

New linear data structure with Linked Lists! With a view on the memory to see where data is allocated and accessed with pointers.

### 2020.1 — 2020-03-18

- Updated for iOS 13 (bug fixes & dark mode)
- Fixed UI layout glitches for iPad Pros with bigger screen resolutions

### 2018.1 — 2018-12-18

Bug fixes:
- Fixed a bug with 'while' loops and undo, where the first iteration was not undone;
- Fixed a UI bug where undoing an assignment to a variable moved the value from the wrong place;
- Fixed a random crash occurring when 'Done' was tapped while an animation was running;
- Fixed a random crash while animating Queues or Stacks with high speed and auto-generation of the next method to execute;

### 2017.1 — 2017-03-20

Linear Data Structures, with:
 - Queue (array implementation) 
 - Stack (array implementation)
 - Choose which function to execute next on a data structure, or
 - Run a scenario that automatically chooses what function to execute.
 - choose the size of the data structure (up to 500 elements) and pre-fill amount.

Bug fixes:
- fixed rare crash with sending mail in portrait.

## Apps similar to Algorithms HQ

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [VisiGrab: Algorithms & DSA](https://appshunter.io/ios/app/visigrab-algorithms-and-dsa/id1484525469) | 4.8 (73) | Free | Education |
| [Delta: Algorithms](https://appshunter.io/ios/app/delta-algorithms/id1436506800) | 3.1 (7) | Free | Education |
| [Learn Cloud Computing - AWS](https://appshunter.io/ios/app/learn-cloud-computing-aws/id1626614436) | 5.0 (1) | $1.99 | Education |
| [DSA Master - Data & Algorithms](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683) | 4.2 (35) | Free | Education |
| [Algorithm Visualizer](https://appshunter.io/ios/app/algorithm-visualizer/id6468837965) | 5.0 (4) | Free | Education |
| [Civil Engineering Calculators](https://appshunter.io/ios/app/civil-engineering-calculators/id673068400) | 4.8 (12) | $19.99 | Education |

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*