# pxSat3D vs Gaiaxus

The clearest difference is rating: Gaiaxus at 5.0 against pxSat3D's 4.5. Gaiaxus also leads on in-app purchases (none vs 2). pxSat3D's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 15.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. pxSat3D sells 2 one-off in-app purchases. Gaiaxus asks for nothing beyond the download.

Gaiaxus holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

pxSat3D ships an update every 3 months, Gaiaxus every 2 months. The most recent releases landed on October 2, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | pxSat3D | Gaiaxus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/pxsat3d/id1493707854/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gaiaxus/id6748620502/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 75 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [P'tit Xav](https://appshunter.io/developer/373775246) | [GaiaXus LLC](https://appshunter.io/developer/1826606292) |

## 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 |


### Gaiaxus

[App page](https://appshunter.io/ios/app/gaiaxus/id6748620502)

This app enables users to monitor water quality using a connected sensor, collecting data on temperature, turbidity, salinity, and more. It offers interactive learning modules for environmental education, suitable for students and citizen scientists.

**Highlights:** Real-time water quality data collection, Temperature, turbidity, salinity, pH, chlorophyll monitoring, Interactive educator-designed learning modules, Field data collection and viewing, Supports K-12 students, citizen scientists, and researchers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is pxSat3D free?

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

### Is Gaiaxus free?

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

### Which has better reviews, pxSat3D or Gaiaxus?

Gaiaxus is rated higher. pxSat3D averages 4.5 out of 5 from 2 ratings, while Gaiaxus averages 5.0 from 1 ratings.

### Do pxSat3D or Gaiaxus have ads?

Neither pxSat3D nor Gaiaxus shows ads.

### Which is updated more often, pxSat3D or Gaiaxus?

pxSat3D ships an update every 3 months, and Gaiaxus every 2 months. Most recently, pxSat3D was updated on October 2, 2026 and Gaiaxus 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.*