# Mars Book vs Mars Climate

The clearest difference is iOS requirement: Mars Book at 9.0 against Mars Climate's 13.2. 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.

Mars Book ships an update every 13 months, Mars Climate every 12 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Mars Book | Mars Climate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mars-climate/id1492603998/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 12 months** |
| Monetization | — | Free |
| Size | 14 MB | 5 MB |
| Requires iOS | **9.0** | 13.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [DJ Brunk](https://appshunter.io/developer/1470869355) |

## What reviewers say

### Mars Book

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

**In-app purchases:** none


### Mars Climate

[App page](https://appshunter.io/ios/app/mars-climate/id1492603998)

Explore the daily weather patterns and climate conditions on the planet Mars. This educational application provides insights into Martian atmospheric data.

**Highlights:** Daily Martian climate information, Educational content about Mars, Planet exploration insights

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mars Book free?

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

### Is Mars Climate free?

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

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

Neither Mars Book nor Mars Climate shows ads.

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

Mars Book ships an update every 13 months, and Mars Climate every 12 months. Most recently, Mars Book was updated on September 10, 2026 and Mars Climate on June 1, 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.*