# MDS vs Space Outpost

The clearest difference is in-app purchases: Space Outpost at none against MDS's 7. Space Outpost also leads on update cadence (daily vs monthly) and iOS requirement (16.4 vs 26.0). MDS's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. MDS sells 7 one-off in-app purchases. Space Outpost asks for nothing beyond the download.

MDS ships an update monthly, Space Outpost daily. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | MDS | Space Outpost |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/space-outpost/id6772625531/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Monetization | — | Ad-supported |
| Size | 171 MB | 78 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Bruce Mattison](https://appshunter.io/developer/1786343567) | [Steven Brown](https://appshunter.io/developer/1896142200) |

## What reviewers say

### MDS

[App page](https://appshunter.io/ios/app/mds-tdgambit/id6739622461)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 GambitAx Gems | $0.99 | one-time |
| Hard and Insane Difficulties | $0.99 | one-time |
| Chapter 3 Maps | $1.99 | one-time |
| 300 GambitAx Gems | $1.99 | one-time |
| Chapter 1 Maps | $2.99 | one-time |
| Chapter 2 Maps | $2.99 | one-time |
| Play Maps in Any Order | $3.99 | one-time |


### Space Outpost

[App page](https://appshunter.io/ios/app/space-outpost/id6772625531)

Defend your outpost against relentless alien hordes in this sci-fi tower defense game. Strategically build and upgrade defensive towers, deploy mobile units, and utilize powerful orbital strikes to save the sun. Play offline and one-handed.

**Highlights:** Campaign across unique planets, Diverse tower and unit types, Mobile strike units and orbital powerups, Multiple enemy types and bosses, Classic and Sudden Death game modes, Offline and one-handed play, Unlockable towers, units, and powerups

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

**In-app purchases:** none


## Frequently asked questions

### Is MDS free?

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

### Is Space Outpost free?

Space Outpost is free to download, with no in-app purchases.

### Do MDS or Space Outpost have ads?

Space Outpost shows ads; MDS does not.

### Which is updated more often, MDS or Space Outpost?

MDS ships an update monthly, and Space Outpost daily. Most recently, MDS was updated on October 9, 2026 and Space Outpost on October 10, 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.*