# Hayan Tech vs BigO Algorithms

The clearest difference is iOS requirement: Hayan Tech at 15.1 against BigO Algorithms's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Hayan Tech sells 1 one-off in-app purchase and BigO Algorithms sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Hayan Tech | BigO Algorithms |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bigo-algorithms/id6761836617/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 54 MB | 25 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Mohammad Hasan](https://appshunter.io/developer/1840610284) | [Gregori Farias](https://appshunter.io/developer/1891708605) |

## What reviewers say

### Hayan Tech

[App page](https://appshunter.io/ios/app/hayan-tech/id6760188626)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vanakkam DSA | $49.99 | one-time |


### BigO Algorithms

[App page](https://appshunter.io/ios/app/bigo-algorithms/id6761836617)

This app provides a technical environment for software engineers and computer science students to prepare for interviews. It uses AI-powered mentorship and visual complexity curves to help users understand logic and analyze code errors.

**Highlights:** AI-powered mentorship, Dual-clue analysis (Static Blueprints & OpenAI), Big O complexity curve visualization, Dark-mode first aesthetic, Code error analysis, Logic-focused learning

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BigO Premium Monthly | $7.99 | per month |
| BigO Premium Annual | $57.99 | per year |


## Frequently asked questions

### Is Hayan Tech free?

Hayan Tech is free to download, with in-app purchases available.

### Is BigO Algorithms free?

BigO Algorithms is free to download, with in-app purchases available.

### Do Hayan Tech or BigO Algorithms have ads?

Neither Hayan Tech nor BigO Algorithms shows ads.

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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.*