# HK P.1 & P.2 Math vs Coding Galaxy

The clearest difference is in-app purchases: HK P.1 & P.2 Math at none against Coding Galaxy's 2. Coding Galaxy's advantage is update cadence (fortnightly vs every 30 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Coding Galaxy sells 2 in-app purchases, starting at $4.99 per month. HK P.1 & P.2 Math asks for nothing beyond the download.

HK P.1 & P.2 Math ships an update every 30 months, Coding Galaxy fortnightly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HK P.1 & P.2 Math | Coding Galaxy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Fortnightly** |
| Size | 7 MB | 45 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yik Lam Leung](https://appshunter.io/developer/1215582728) | [Tangor Technology Limited](https://appshunter.io/developer/1108855801) |

## What reviewers say

### HK P.1 & P.2 Math

[App page](https://appshunter.io/ios/app/hk-p1-and-p2-math/id1215582729)

**Features:** macOS Compatibility

**In-app purchases:** none


### Coding Galaxy

[App page](https://appshunter.io/ios/app/coding-galaxy-city-x/id1472707484)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CGSC Monthly Plan | $4.99 | per month |
| CGSC Yearly Plan | $39.99 | per year |


## Frequently asked questions

### Is HK P.1 & P.2 Math free?

HK P.1 & P.2 Math is free to download, with no in-app purchases.

### Is Coding Galaxy free?

Coding Galaxy is free to download, with in-app purchases available.

### Do HK P.1 & P.2 Math or Coding Galaxy have ads?

Neither HK P.1 & P.2 Math nor Coding Galaxy shows ads.

### Which is updated more often, HK P.1 & P.2 Math or Coding Galaxy?

HK P.1 & P.2 Math ships an update every 30 months, and Coding Galaxy fortnightly. Most recently, HK P.1 & P.2 Math was updated on November 2, 2026 and Coding Galaxy on November 3, 2026.

---

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