# Skystack vs STACK

The clearest difference is update cadence: STACK at every 2 weeks against Skystack's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Skystack sells 3 one-off in-app purchases and STACK sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Skystack ships an update every 2 months, STACK every 2 weeks. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Skystack | STACK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 7 MB | 25 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Lubcke](https://appshunter.io/developer/6781892927) | [Jonathan Rycx](https://appshunter.io/developer/6776471796) |

## What reviewers say

### Skystack

[App page](https://appshunter.io/ios/app/skystack-rise-higher/id6784833860)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tier Skip +1 | $0.99 | one-time |
| Tier Skip +5 | $3.99 | one-time |
| Premium Season Pass | $4.99 | one-time |


### STACK

[App page](https://appshunter.io/ios/app/stack-tower-builder/id6796613603)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 250 Gems | $0.99 | one-time |
| 700 Gems | $2.99 | one-time |
| 1,500 Gems | $5.99 | one-time |
| Full Game | $7.99 | one-time |
| 3,500 Gems | $9.99 | one-time |


## Frequently asked questions

### Is Skystack free?

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

### Is STACK free?

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

### Do Skystack or STACK have ads?

Both Skystack and STACK show ads.

### Which is updated more often, Skystack or STACK?

Skystack ships an update every 2 months, and STACK every 2 weeks. Most recently, Skystack was updated on October 6, 2026 and STACK on September 29, 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.*