# Hack Attack Pro vs Polynomial Regression

The clearest difference is price: Polynomial Regression at Free against Hack Attack Pro's $2.99. Polynomial Regression also leads on in-app purchases (none vs 5). Hack Attack Pro's advantage is iOS requirement (12.0 vs 15.0). On update cadence, ads and device support there is nothing between them.

Polynomial Regression is free to download; Hack Attack Pro costs $2.99 up front. Hack Attack Pro sells 5 one-off in-app purchases. Polynomial Regression asks for nothing beyond the download.

Hack Attack Pro ships an update monthly, Polynomial Regression every 3 weeks. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Hack Attack Pro | Polynomial Regression |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/hack-attack-pro/id1563527484/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 219 MB | 4 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Up&Atom!](https://appshunter.io/developer/374315793) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## What reviewers say

### Hack Attack Pro

[App page](https://appshunter.io/ios/app/hack-attack-pro/id1563527484)

This casual training game uses a match-3 platform to teach cyber safety skills. It's designed to be engaging and fun, improving knowledge retention better than traditional methods. Features include 120 levels, time tracking, and achievement certificates.

**Highlights:** Match-3 gameplay, Cyber safety education, 120 levels, Time tracking, Achievement certificates, Corporate training

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coins Pack 1 | $0.99 | one-time |
| Coins Pack 2 | $1.99 | one-time |
| Coins Pack 3 | $2.99 | one-time |
| Coins Pack 4 | $5.99 | one-time |
| Coins Pack 5 | $9.99 | one-time |


### Polynomial Regression

[App page](https://appshunter.io/ios/app/polynomial-regression/id6741364702)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hack Attack Pro free?

Hack Attack Pro costs $2.99, and also offers in-app purchases.

### Is Polynomial Regression free?

Polynomial Regression is free to download, with no in-app purchases.

### Do Hack Attack Pro or Polynomial Regression have ads?

Neither Hack Attack Pro nor Polynomial Regression shows ads.

### Which is updated more often, Hack Attack Pro or Polynomial Regression?

Hack Attack Pro ships an update monthly, and Polynomial Regression every 3 weeks. Most recently, Hack Attack Pro was updated on October 5, 2026 and Polynomial Regression on October 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*