# Space Tower Defense ModuleTD 2 vs Interstellar Trader

The clearest difference is in-app purchases: Interstellar Trader at none against Space Tower Defense ModuleTD 2's 15. Interstellar Trader also leads on update cadence (every 5 weeks vs every 7 months) and iOS requirement (13.0 vs 15.6). Space Tower Defense ModuleTD 2's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Space Tower Defense ModuleTD 2 sells 15 one-off in-app purchases. Interstellar Trader asks for nothing beyond the download.

Space Tower Defense ModuleTD 2 ships an update every 7 months, Interstellar Trader every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Space Tower Defense ModuleTD 2 | Interstellar Trader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (11 ratings)](https://appshunter.io/ios/app/space-tower-defense-moduletd-2/id1447081338/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 438 MB | 40 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Mikhail Vladimirovich](https://appshunter.io/developer/660171136) | [Vevin Blank](https://appshunter.io/developer/6785802259) |

## What reviewers say

### Space Tower Defense ModuleTD 2

[App page](https://appshunter.io/ios/app/space-tower-defense-moduletd-2/id1447081338)

This game offers a unique tower defense experience where strategic depth comes from customizing towers with over 60 modules. Adapt your defenses to diverse enemies and challenging levels, as there's no single winning strategy.

**Highlights:** Tower customization with 60+ modules, Adaptive strategies for unique levels, Diverse enemy types with special abilities, Experiment with module combinations, 15+ challenging levels, Offline gameplay

**Features:** macOS Compatibility

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tower Consumable  Buff | $0.99 | one-time |
| Crystal Pack Small | $0.99 | one-time |
| Medium Consumable Buff Pack | $1.99 | one-time |
| Medium Consumable Buff Pack | $2.99 | one-time |
| Crystal Pack Medium | $3.99 | one-time |
| Crystal Pack Medium | $4.99 | one-time |
| Big Tower Consumable Buff Pack | $6.99 | one-time |
| Crystal Pack Good-Sized | $6.99 | one-time |
| Big Tower Consumable Buff Pack | $8.99 | one-time |
| Crystal Pack Good-Sized | $8.99 | one-time |
| Crystal Pack Large | $12.99 | one-time |
| Crystal Pack Large | $17.99 | one-time |
| Crystal Pack Great | $25.99 | one-time |
| Crystal Pack Great | $36.99 | one-time |
| Crystal Pack MEGA | $46.99 | one-time |


### Interstellar Trader

[App page](https://appshunter.io/ios/app/interstellar-trader-rpg/id6788598604)

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

**In-app purchases:** none


## Frequently asked questions

### Is Space Tower Defense ModuleTD 2 free?

Space Tower Defense ModuleTD 2 is free to download, with in-app purchases available.

### Is Interstellar Trader free?

Interstellar Trader is free to download, with no in-app purchases.

### Do Space Tower Defense ModuleTD 2 or Interstellar Trader have ads?

Interstellar Trader shows ads; Space Tower Defense ModuleTD 2 does not.

### Which is updated more often, Space Tower Defense ModuleTD 2 or Interstellar Trader?

Space Tower Defense ModuleTD 2 ships an update every 7 months, and Interstellar Trader every 5 weeks. Most recently, Space Tower Defense ModuleTD 2 was updated on October 24, 2026 and Interstellar Trader on October 25, 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.*