# pxSat3D vs Red Hat RHCSA Prep

The clearest difference is price: pxSat3D at Free against Red Hat RHCSA Prep's $4.99. pxSat3D also leads on iOS requirement (13.0 vs 15.1). Red Hat RHCSA Prep's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 3 months). On ads and device support there is nothing between them.

pxSat3D is free to download; Red Hat RHCSA Prep costs $4.99 up front. pxSat3D sells 2 one-off in-app purchases. Red Hat RHCSA Prep asks for nothing beyond the download.

pxSat3D ships an update every 3 months, Red Hat RHCSA Prep every 3 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | pxSat3D | Red Hat RHCSA Prep |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/pxsat3d/id1493707854/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 33 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [P'tit Xav](https://appshunter.io/developer/373775246) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### pxSat3D

[App page](https://appshunter.io/ios/app/pxsat3d/id1493707854)

Visualize real-time satellite orbits around Earth. Explore the density of specific satellite types in orbit. Performance may vary on older devices.

**Highlights:** Real-time satellite tracking, Visualize satellite orbits, Quantify satellite types, Space traffic visualization, Educational space data

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Tip | $2.99 | one-time |


### Red Hat RHCSA Prep

[App page](https://appshunter.io/ios/app/red-hat-rhcsa-prep/id6784155803)

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

**In-app purchases:** none


## Frequently asked questions

### Is pxSat3D free?

pxSat3D is free to download, with in-app purchases available.

### Is Red Hat RHCSA Prep free?

Red Hat RHCSA Prep costs $4.99, with no in-app purchases.

### Do pxSat3D or Red Hat RHCSA Prep have ads?

Neither pxSat3D nor Red Hat RHCSA Prep shows ads.

### Which is updated more often, pxSat3D or Red Hat RHCSA Prep?

pxSat3D ships an update every 3 months, and Red Hat RHCSA Prep every 3 weeks. Most recently, pxSat3D was updated on October 2, 2026 and Red Hat RHCSA Prep on October 6, 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.*