# Shields Defend vs Alien Core

The clearest difference is in-app purchases: Shields Defend at none against Alien Core's 7. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Alien Core sells 7 one-off in-app purchases. Shields Defend asks for nothing beyond the download.

## The numbers

| Metric | Shields Defend | Alien Core |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 79 MB | 18 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BleatBleat](https://appshunter.io/developer/569011004) | [Sunrise Intelligence UG](https://appshunter.io/developer/1562727794) |

## What reviewers say

### Shields Defend

[App page](https://appshunter.io/ios/app/shields-defend/id6474212048)

**Features:** macOS Compatibility

**In-app purchases:** none


### Alien Core

[App page](https://appshunter.io/ios/app/alien-core-galaxy-invasion/id6575386825)

Pilot advanced starships in a retro-futuristic arcade shooter to battle a rogue AI and its empire. Experience classic 2D gameplay with modern effects, RPG-like ship upgrades, and multiple game modes.

**Highlights:** Retro-futuristic ASCII visuals with modern effects, Omnidirectional free movement, Story and Endless Arcade modes, Chain-reaction destruction mechanic, Unlockable spaceships and worlds, Ship upgrades and power-ups, Boss battles and adjustable difficulty

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starship YT 1300 | $0.99 | one-time |
| Starship Talon | $0.99 | one-time |
| Starship Bird of Prey | $0.99 | one-time |
| Starship Arcade II | $1.95 | one-time |
| Starship N-22 Ravenous | $1.99 | one-time |
| Story Mode | $2.99 | one-time |
| No Ads | $3.99 | one-time |


## Frequently asked questions

### Is Shields Defend free?

Shields Defend is free to download, with no in-app purchases.

### Is Alien Core free?

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

### Do Shields Defend or Alien Core have ads?

Both Shields Defend and Alien Core show ads.

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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.*