# Space Xplorer by MB vs Gem Digger

The clearest difference is in-app purchases: Space Xplorer by MB at none against Gem Digger's 6. Space Xplorer by MB also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Gem Digger sells 6 one-off in-app purchases. Space Xplorer by MB asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Space Xplorer by MB | Gem Digger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/space-xplorer-by-mb/id6742632038/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 61 MB | 52 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [The GreenStreak, Corp.](https://appshunter.io/developer/1290400226) | [Seif Ibrahim](https://appshunter.io/developer/1173469733) |

## What reviewers say

### Space Xplorer by MB

[App page](https://appshunter.io/ios/app/space-xplorer-by-mb/id6742632038)

Pilot a starship and defend against waves of invaders in this classic arcade-style shooter. Compete online, challenge friends, and explore different game modes for practice or high-stakes play.

**Highlights:** Classic space invader gameplay, Online leaderboards, Competitive game modes, Practice mode, Play Free mode, Daily challenges

**Features:** macOS Compatibility

**In-app purchases:** none


### Gem Digger

[App page](https://appshunter.io/ios/app/gem-digger-cave-quest/id6780266274)

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystal Caves | $2.99 | one-time |
| Magma Depths | $2.99 | one-time |
| Frozen Hollow | $2.99 | one-time |
| Remove Ads | $3.99 | one-time |
| Unlock All Worlds | $6.99 | one-time |
| Complete Edition | $9.99 | one-time |


## Frequently asked questions

### Is Space Xplorer by MB free?

Space Xplorer by MB is free to download, with no in-app purchases.

### Is Gem Digger free?

Gem Digger is free to download, with in-app purchases available.

### Do Space Xplorer by MB or Gem Digger have ads?

Gem Digger shows ads; Space Xplorer by MB does not.

### Which is updated more often, Space Xplorer by MB or Gem Digger?

Space Xplorer by MB ships an update every 2 months, and Gem Digger every 2 months. Most recently, Space Xplorer by MB was updated on October 30, 2026 and Gem Digger on October 31, 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.*