# Ultimate Stack Attack vs Alien High

The clearest difference is in-app purchases: Ultimate Stack Attack at none against Alien High's 2. Ultimate Stack Attack also leads on iOS requirement (14.0 vs 17.6). Alien High's advantage is update cadence (every 10 months vs every 49 months). On price, ads and device support there is nothing between them.

Both are free to download. Alien High sells 2 one-off in-app purchases. Ultimate Stack Attack asks for nothing beyond the download.

Ultimate Stack Attack ships an update every 49 months, Alien High every 10 months. The most recent releases landed on September 15, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Ultimate Stack Attack | Alien High |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/alien-high/id1412407955/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 49 months | **Every 10 months** |
| Monetization | — | Free with in-app purchases |
| Size | 75 MB | 73 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Aleksa Racovic](https://appshunter.io/developer/1255649501) | [Brandon Stecklein](https://appshunter.io/developer/498894252) |

## What reviewers say

### Ultimate Stack Attack

[App page](https://appshunter.io/ios/app/ultimate-stack-attack/id1319313442)

**Features:** macOS Compatibility

**In-app purchases:** none


### Alien High

[App page](https://appshunter.io/ios/app/alien-high/id1412407955)

Survive an alien invasion at your high school in this interactive story RPG hybrid. Your choices shape the narrative, determining who lives, who dies, and the fate of the school. Explore multiple paths and endings through engaging dialogue and combat.

**Highlights:** Interactive story choices, Multiple paths and endings, RPG elements, Humorous dialogue, Combat and leveling up, Unlockable story lines

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Ape Coins | $0.99 | one-time |
| Alien High Premium | $1.99 | one-time |


## Frequently asked questions

### Is Ultimate Stack Attack free?

Ultimate Stack Attack is free to download, with no in-app purchases.

### Is Alien High free?

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

### Do Ultimate Stack Attack or Alien High have ads?

Both Ultimate Stack Attack and Alien High show ads.

### Which is updated more often, Ultimate Stack Attack or Alien High?

Ultimate Stack Attack ships an update every 49 months, and Alien High every 10 months. Most recently, Ultimate Stack Attack was updated on September 15, 2026 and Alien High on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*