# Cosmic Invasion vs Stack Tank

The clearest difference is ads: Cosmic Invasion at none against Stack Tank's shown. Stack Tank's advantage is update cadence (weekly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Cosmic Invasion sells 6 one-off in-app purchases and Stack Tank sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Cosmic Invasion ships an update monthly, Stack Tank weekly. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Cosmic Invasion | Stack Tank |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stack-tank/id6761960546/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 292 MB | 114 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [NeosZone](https://appshunter.io/developer/1521458851) | [ShiJiazhuang Rufang Technology Co.,Ltd.](https://appshunter.io/developer/1553736315) |

## What reviewers say

### Cosmic Invasion

[App page](https://appshunter.io/ios/app/cosmic-invasion/id6738304336)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bag of 60 Gems | $0.99 | one-time |
| Bag of Gems | $2.99 | one-time |
| Bag of Gems | $6.99 | one-time |
| Bag of Gems | $19.99 | one-time |
| Bag of Gems | $34.99 | one-time |
| Bag of Gems | $69.99 | one-time |


### Stack Tank

[App page](https://appshunter.io/ios/app/stack-tank/id6761960546)

Engage in a roguelike tank survival experience, mowing down hordes of enemies. Acquire and stack new turrets during combat to create a "Moving Fortress" with exponential firepower. Fuse turrets into devastating "Super Weapons" and master diverse mission modes for ultimate stress relief.

**Highlights:** Infinite turret stacking mechanic, Infinite evolution and super fusions, Diverse mission modes, Satisfying grass-cutting action, One-finger controls

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 60 Gems | $1.99 | one-time |
| Unlock Hammer | $2.99 | one-time |
| Unlock Sentinel | $2.99 | one-time |
| Unlock Ranger | $3.99 | one-time |
| Unlock Vindicator | $3.99 | one-time |
| 330 Gems | $4.99 | one-time |
| 720 Gems | $9.99 | one-time |
| 1600 Gems | $24.99 | one-time |
| 4200 Gems | $49.99 | one-time |


## Frequently asked questions

### Is Cosmic Invasion free?

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

### Is Stack Tank free?

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

### Do Cosmic Invasion or Stack Tank have ads?

Stack Tank shows ads; Cosmic Invasion does not.

### Which is updated more often, Cosmic Invasion or Stack Tank?

Cosmic Invasion ships an update monthly, and Stack Tank weekly. Most recently, Cosmic Invasion was updated on October 4, 2026 and Stack Tank on October 11, 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.*