# Mars Walk vs Mars Book

The clearest difference is update cadence: Mars Walk at every 2 weeks against Mars Book's every 13 months. On price, ads, 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.

Mars Walk ships an update every 2 weeks, Mars Book every 13 months. Both last shipped on October 13, 2026.

## The numbers

| Metric | Mars Walk | Mars Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (34 ratings)](https://appshunter.io/ios/app/mars-walk/id1192328042/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 70.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 13 months |
| Monetization | Free | — |
| Size | 732 MB | 14 MB |
| Requires iOS | 10.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lockheed Martin](https://appshunter.io/developer/400687539) | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) |

## What reviewers say

### Mars Walk

[App page](https://appshunter.io/ios/app/mars-walk/id1192328042)

Embark on an interactive virtual reality tour of the red planet using your smartphone. Explore famous landing sites, witness Martian phenomena like dust storms, and observe scientific missions in action. This educational adventure brings the wonders of Mars directly to you.

**Highlights:** Explore Mars landing sites (InSight, Viking, Curiosity), Experience Martian dust storms, Observe InSight's data gathering, Visit Viking landers, Follow Curiosity's sample collection

**Features:** macOS Compatibility

**In-app purchases:** none


### Mars Book

[App page](https://appshunter.io/ios/app/mars-book/id1342509724)

**In-app purchases:** none


## Frequently asked questions

### Is Mars Walk free?

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

### Is Mars Book free?

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

### Do Mars Walk or Mars Book have ads?

Neither Mars Walk nor Mars Book shows ads.

### Which is updated more often, Mars Walk or Mars Book?

Mars Walk ships an update every 2 weeks, and Mars Book every 13 months. Most recently, Mars Walk was updated on October 13, 2026 and Mars Book 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.*