# Mars Defender vs Blue Planet

Mars Defender and Blue Planet are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Mars Defender sells 5 one-off in-app purchases and Blue Planet sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Mars Defender | Blue Planet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 4 months |
| Size | 82 MB | 257 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Valentina Prossapchuk](https://appshunter.io/developer/1895013467) | [ROHAN CREATIVE COMPANY LIMITED](https://appshunter.io/developer/1485421365) |

## What reviewers say

### Mars Defender

[App page](https://appshunter.io/ios/app/mars-defender/id6762791745)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Gold Pack | $0.99 | one-time |
| Medium Gold Pack | $1.99 | one-time |
| Remove ads | $2.99 | one-time |
| Starter Pack | $3.99 | one-time |
| Large Gold Pack | $4.99 | one-time |


### Blue Planet

[App page](https://appshunter.io/ios/app/blue-planet-defense/id6775349754)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem Pack 1 | $1.99 | one-time |
| Summoner Pack | $1.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Gem Pack 2 | $4.99 | one-time |
| Gem Pack 3 | $7.99 | one-time |


## Frequently asked questions

### Is Mars Defender free?

Mars Defender is free to download, with in-app purchases available.

### Is Blue Planet free?

Blue Planet is free to download, with in-app purchases available.

### Do Mars Defender or Blue Planet have ads?

Both Mars Defender and Blue Planet show ads.

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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.*