# Mars Walk VR vs ISS Explorer

The clearest difference is review sentiment: ISS Explorer at 100% against Mars Walk VR's 43%. ISS Explorer also leads on rating (4.9 vs 2.4). Mars Walk VR's advantage is update cadence (every 2 weeks vs every 10 months) and iOS requirement (10.0 vs 13.0). On price, ratings volume, 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 holds the better App Store score, 4.9 against 2.4. Both are backed by a comparable volume of ratings — 32 and 16 respectively. Written reviews point the same way: 43% of Mars Walk VR's written reviews are positive against 100% of ISS Explorer's.

Mars Walk VR ships an update every 2 weeks, ISS Explorer every 10 months. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Mars Walk VR | ISS Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (32 ratings)](https://appshunter.io/ios/app/mars-walk-vr/id1193339172/reviews) | **[4.9 (16 ratings)](https://appshunter.io/ios/app/iss-explorer/id1429876038/reviews)** |
| Number of ratings | **32** | 16 |
| Positive reviews | 43.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 10 months |
| Monetization | Free | Free |
| Size | 736 MB | 747 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lockheed Martin](https://appshunter.io/developer/400687539) | [NASA](https://appshunter.io/developer/355542146) |

## What reviewers say

### Mars Walk VR

[App page](https://appshunter.io/ios/app/mars-walk-vr/id1193339172)

Embark on an educational virtual reality tour of the red planet. Explore Martian landscapes, visit historic landing sites, and witness scientific instruments in action. This immersive experience brings the wonders of Mars directly to your smartphone.

**Highlights:** Explore Mars surface and landing sites, Experience Martian dust storms, Observe scientific instruments on Mars, Visit historic Viking landers, Follow Curiosity rover's sample collection

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Mars Walk VR free?

Mars Walk VR is free to download, with no in-app purchases.

### Is ISS Explorer free?

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

### Which has better reviews, Mars Walk VR or ISS Explorer?

ISS Explorer is rated higher. Mars Walk VR averages 2.4 out of 5 from 32 ratings, while ISS Explorer averages 4.9 from 16 ratings.

### Do Mars Walk VR or ISS Explorer have ads?

Neither Mars Walk VR nor ISS Explorer shows ads.

### Which is updated more often, Mars Walk VR or ISS Explorer?

Mars Walk VR ships an update every 2 weeks, and ISS Explorer every 10 months. Most recently, Mars Walk VR was updated on October 14, 2026 and ISS Explorer on October 13, 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.*