# ISS Explorer vs 3D James Webb Telescope

The clearest difference is rating: ISS Explorer at 4.9 against 3D James Webb Telescope's 4.4. ISS Explorer also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, in-app purchases and device support 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 holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 16 and 33 respectively.

ISS Explorer ships an update every 10 months, 3D James Webb Telescope every 20 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ISS Explorer | 3D James Webb Telescope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/iss-explorer/id1429876038/reviews)** | [4.4 (33 ratings)](https://appshunter.io/ios/app/3d-james-webb-telescope/id1611072442/reviews) |
| Number of ratings | 16 | **33** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 10 months** | Every 20 months |
| Monetization | **Free** | Ad-supported |
| Size | 747 MB | 176 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Renzo Macedo](https://appshunter.io/developer/1403943580) |

## 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


### 3D James Webb Telescope

[App page](https://appshunter.io/ios/app/3d-james-webb-telescope/id1611072442)

Explore the universe and learn about the James Webb Space Telescope through an immersive 3D game. Experience realistic orbital controls, educational insights, and challenging missions to uncover cosmic mysteries.

**Highlights:** Realistic orbital controls, Educational insights on JWST, Challenging space missions, Discover celestial phenomena, Understand astrophysics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISS Explorer free?

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

### Is 3D James Webb Telescope free?

3D James Webb Telescope is free to download, with no in-app purchases.

### Which has better reviews, ISS Explorer or 3D James Webb Telescope?

ISS Explorer is rated higher. ISS Explorer averages 4.9 out of 5 from 16 ratings, while 3D James Webb Telescope averages 4.4 from 33 ratings.

### Do ISS Explorer or 3D James Webb Telescope have ads?

3D James Webb Telescope shows ads; ISS Explorer does not.

### Which is updated more often, ISS Explorer or 3D James Webb Telescope?

ISS Explorer ships an update every 10 months, and 3D James Webb Telescope every 20 months. Most recently, ISS Explorer was updated on October 24, 2026 and 3D James Webb Telescope on October 30, 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.*