# ISS Explorer vs Pahsu

The clearest difference is iOS requirement: ISS Explorer at 13.0 against Pahsu's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ISS Explorer ships an update every 10 months, Pahsu every 8 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | ISS Explorer | Pahsu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/iss-explorer/id1429876038/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 8 months** |
| Monetization | Free | — |
| Size | 747 MB | 15 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Edulab Educational Exchange Private Limited](https://appshunter.io/developer/1116141797) |

## What reviewers say

### ISS Explorer

[App page](https://appshunter.io/ios/app/iss-explorer/id1429876038)

Explore a detailed 3D model of the International Space Station. Rotate, zoom, and select individual components to learn about their function and systems. Organize your view by turning parts and labels on or off.

**Highlights:** Interactive 3D ISS model, Rotate and zoom functionality, Selectable parts with isolation, Detailed information on components, Hierarchical part organization, Toggle parts and labels

**Features:** Vision Pro support

**In-app purchases:** none


### Pahsu

[App page](https://appshunter.io/ios/app/pahsu-krc/id6648780958)

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

**In-app purchases:** none


## Frequently asked questions

### Is ISS Explorer free?

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

### Is Pahsu free?

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

### Do ISS Explorer or Pahsu have ads?

Neither ISS Explorer nor Pahsu shows ads.

### Which is updated more often, ISS Explorer or Pahsu?

ISS Explorer ships an update every 10 months, and Pahsu every 8 months. Most recently, ISS Explorer was updated on November 2, 2026 and Pahsu on November 4, 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.*