# Shell Keepers vs Save the Mars Ultimate

The clearest difference is rating: Save the Mars Ultimate at 5.0 against Shell Keepers's 3.0. Save the Mars Ultimate also leads on ads (none vs shown) and ratings volume (9 vs 2). Shell Keepers's advantage is in-app purchases (none vs 2) and update cadence (every 2 months vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Save the Mars Ultimate sells 2 one-off in-app purchases. Shell Keepers asks for nothing beyond the download.

Save the Mars Ultimate holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

Shell Keepers ships an update every 2 months, Save the Mars Ultimate every 5 months. The most recent releases landed on September 26, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Shell Keepers | Save the Mars Ultimate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/shell-keepers/id6744458012/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/save-the-mars-ultimate/id6748082139/reviews)** |
| Number of ratings | 2 | **9** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 155 MB | 155 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adknown](https://appshunter.io/developer/1243054661) | [Salman Younis](https://appshunter.io/developer/1824218311) |

## What reviewers say

### Shell Keepers

[App page](https://appshunter.io/ios/app/shell-keepers/id6744458012)

Protect your precious eggs in this fast-paced defense game. Drag and drop enemies to take them down in real-time, utilizing precision throws for a rewarding scoring system. Designed for quick, intense gameplay sessions.

**Highlights:** Drag-and-drop defense mechanics, Real-time enemy takedowns, Precision-based scoring, Short, intense gameplay sessions, Egg-flinging defense

**In-app purchases:** none


### Save the Mars Ultimate

[App page](https://appshunter.io/ios/app/save-the-mars-ultimate/id6748082139)

Protect the red planet from falling dangers in this fast-paced arcade game. Test your reflexes and timing to dodge obstacles and crashing meteors. Simple controls make it easy to pick up, but mastering the challenge will keep you engaged.

**Highlights:** Protect Mars from falling dangers, Dodge deadly obstacles, Avoid crashing meteors, Test reflexes and timing, Simple tap and drag controls, Addictive challenge

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |
| Buy 300 Shields | $9.99 | one-time |


## Frequently asked questions

### Is Shell Keepers free?

Shell Keepers is free to download, with no in-app purchases.

### Is Save the Mars Ultimate free?

Save the Mars Ultimate is free to download, with in-app purchases available.

### Which has better reviews, Shell Keepers or Save the Mars Ultimate?

Save the Mars Ultimate is rated higher. Shell Keepers averages 3.0 out of 5 from 2 ratings, while Save the Mars Ultimate averages 5.0 from 9 ratings.

### Do Shell Keepers or Save the Mars Ultimate have ads?

Shell Keepers shows ads; Save the Mars Ultimate does not.

### Which is updated more often, Shell Keepers or Save the Mars Ultimate?

Shell Keepers ships an update every 2 months, and Save the Mars Ultimate every 5 months. Most recently, Shell Keepers was updated on September 26, 2026 and Save the Mars Ultimate on September 24, 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.*