# Algorithms HQ vs iCoder

The clearest difference is price: Algorithms HQ at Free against iCoder's $1.29. Algorithms HQ also leads on in-app purchases (none vs 1) and rating (4.0 vs 3.7). iCoder's advantage is update cadence (every 6 days vs every 16 months) and ratings volume (6 vs 1). On review sentiment, ads and iOS requirement there is nothing between them.

Algorithms HQ is free to download; iCoder costs $1.29 up front. iCoder sells 1 one-off in-app purchase. Algorithms HQ asks for nothing beyond the download.

Algorithms HQ holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: iCoder has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Algorithms HQ ships an update every 16 months, iCoder every 6 days. The most recent releases landed on October 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Algorithms HQ | iCoder |
| --- | --- | --- |
| Price | **Free** | $1.29 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/algorithms-hq/id660610218/reviews)** | [3.7 (6 ratings)](https://appshunter.io/ios/app/icoder-advanced-algorithms/id1458259471/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 days** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 10 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Cyril Carrez](https://appshunter.io/developer/660610221) | [天从 何](https://appshunter.io/developer/914453386) |

## What reviewers say

### Algorithms HQ

[App page](https://appshunter.io/ios/app/algorithms-hq/id660610218)

Learn computer science algorithms through interactive animations. Visualize data manipulation and execution step-by-step with pseudo-code tracking and variable value updates. Quickly reference algorithm characteristics and customize input data for deeper understanding.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### iCoder

[App page](https://appshunter.io/ios/app/icoder-advanced-algorithms/id1458259471)

This app offers a comprehensive learning resource for algorithms and data structures, featuring a large question bank and interview preparation materials. It provides a powerful search engine and allows users to share progress with friends, making complex topics accessible for IT professionals.

**Highlights:** 1000+ algorithm question bank, IT company interview preparation, Powerful search engine, Shareable learning progress, Cross-platform support (iOS, iPadOS, macOS), Keyboard shortcuts for navigation

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip the developer | $0.99 | one-time |


## Frequently asked questions

### Is Algorithms HQ free?

Algorithms HQ is free to download, with no in-app purchases.

### Is iCoder free?

iCoder costs $1.29, and also offers in-app purchases.

### Which has better reviews, Algorithms HQ or iCoder?

Algorithms HQ is rated higher. Algorithms HQ averages 4.0 out of 5 from 1 ratings, while iCoder averages 3.7 from 6 ratings.

### Do Algorithms HQ or iCoder have ads?

Neither Algorithms HQ nor iCoder shows ads.

### Which is updated more often, Algorithms HQ or iCoder?

Algorithms HQ ships an update every 16 months, and iCoder every 6 days. Most recently, Algorithms HQ was updated on October 10, 2026 and iCoder on September 24, 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.*