# pxSat3D vs Astris

The clearest difference is in-app purchases: Astris at none against pxSat3D's 2. pxSat3D's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 15.0). On price, update cadence and ads there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 1, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | pxSat3D | Astris |
| --- | --- | --- |
| Price | Free | Free |
| 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 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [P'tit Xav](https://appshunter.io/developer/373775246) | [ISTITUTI EDMONDO DE AMICIS SRL](https://appshunter.io/developer/1219261025) |

## 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 |


### Astris

[App page](https://appshunter.io/ios/app/astris/id6454899891)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is pxSat3D free?

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

### Is Astris free?

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

### Do pxSat3D or Astris have ads?

Neither pxSat3D nor Astris shows ads.

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

pxSat3D ships an update every 3 months, and Astris every 3 months. Most recently, pxSat3D was updated on June 1, 2026 and Astris on May 16, 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.*