# Evolvace E2 vs Invaliens, Galaxy Defender.

The clearest difference is price: Invaliens, Galaxy Defender. at Free against Evolvace E2's $4.99. Invaliens, Galaxy Defender. also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.6). Evolvace E2's advantage is ads (none vs shown) and update cadence (every 8 months vs every 35 months). On device support there is nothing between them.

Invaliens, Galaxy Defender. is free to download; Evolvace E2 costs $4.99 up front. Evolvace E2 sells 2 one-off in-app purchases. Invaliens, Galaxy Defender. asks for nothing beyond the download.

Evolvace E2 ships an update every 8 months, Invaliens, Galaxy Defender. every 35 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Evolvace E2 | Invaliens, Galaxy Defender. |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 8 months** | Every 35 months |
| Monetization | — | Ad-supported |
| Size | 87 MB | 79 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Tetsuyoshi Morikawa](https://appshunter.io/developer/430144969) | [Galatic Droids](https://appshunter.io/developer/806182439) |

## What reviewers say

### Evolvace E2

[App page](https://appshunter.io/ios/app/evolvace-e2/id878635618)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Addition | $0.99 | one-time |
| Stage clear button | $0.99 | one-time |


### Invaliens, Galaxy Defender.

[App page](https://appshunter.io/ios/app/invaliens-galaxy-defender/id1134017277)

Defend the galaxy in this retro arcade shoot 'em up. Utilize powerful weapons like neutron lasers and smart bombs to defeat waves of mutating space invaders. Keep moving, keep firing, and strategize your smart bomb usage to save the Megaverse.

**Highlights:** Horizontal scrolling arcade shooter, Neutron laser blasters, Proton shields, Smart bombs, Defeat mutating space invaders, Radar system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Evolvace E2 free?

Evolvace E2 costs $4.99, and also offers in-app purchases.

### Is Invaliens, Galaxy Defender. free?

Invaliens, Galaxy Defender. is free to download, with no in-app purchases.

### Do Evolvace E2 or Invaliens, Galaxy Defender. have ads?

Invaliens, Galaxy Defender. shows ads; Evolvace E2 does not.

### Which is updated more often, Evolvace E2 or Invaliens, Galaxy Defender.?

Evolvace E2 ships an update every 8 months, and Invaliens, Galaxy Defender. every 35 months. Most recently, Evolvace E2 was updated on October 24, 2026 and Invaliens, Galaxy Defender. on October 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.*