# UnderAttack vs Alien Barrage

The clearest difference is ads: Alien Barrage at none against UnderAttack's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. UnderAttack sells 9 one-off in-app purchases and Alien Barrage sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UnderAttack ships an update every 4 months, Alien Barrage every 3 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | UnderAttack | Alien Barrage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alien-barrage/id6759081405/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 88 MB | 45 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [OGULCAN SACLI](https://appshunter.io/developer/1855149869) | [arnold biffna](https://appshunter.io/developer/1076122973) |

## What reviewers say

### UnderAttack

[App page](https://appshunter.io/ios/app/underattack-idle-td/id6756351933)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Gem | $0.99 | one-time |
| 130 Gem | $1.99 | one-time |
| Starter Pack | $2.99 | one-time |
| Adventurer Bundle | $4.99 | one-time |
| 350 Gem | $4.99 | one-time |
| 650 Gem | $7.99 | one-time |
| Veteran Pack | $9.99 | one-time |
| Dreadnought | $9.99 | one-time |
| 1500 Gem | $14.99 | one-time |


### Alien Barrage

[App page](https://appshunter.io/ios/app/alien-barrage/id6759081405)

Defend Earth from relentless alien invaders in this fast-paced retro arcade shooter. Dodge plasma, collect powerups, and survive challenging boss battles. Compete on global leaderboards for the highest score and wave survived.

**Highlights:** Touch-and-drag controls with automatic firing, Endless escalating waves of alien enemies, Bonus Rounds and Boss Battles, Collectible powerups and screen-clearing bombs, Unlockable ships and difficulty modes, Game Center leaderboards and achievements

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Revives | $0.99 | one-time |
| 10 Revives | $1.99 | one-time |
| 10 Extra Bombs. | $1.99 | one-time |
| Dual Shooter Ship | $2.99 | one-time |
| 40 revives | $4.99 | one-time |
| 100 Revives | $9.99 | one-time |


## Frequently asked questions

### Is UnderAttack free?

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

### Is Alien Barrage free?

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

### Do UnderAttack or Alien Barrage have ads?

UnderAttack shows ads; Alien Barrage does not.

### Which is updated more often, UnderAttack or Alien Barrage?

UnderAttack ships an update every 4 months, and Alien Barrage every 3 months. Most recently, UnderAttack was updated on October 6, 2026 and Alien Barrage on October 5, 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.*