# Whack Stack! vs Sky Stack

The clearest difference is in-app purchases: Sky Stack at none against Whack Stack!'s 11. Sky Stack also leads on update cadence (daily vs every 3 weeks). Whack Stack!'s advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Whack Stack! sells 11 one-off in-app purchases. Sky Stack asks for nothing beyond the download.

Whack Stack! ships an update every 3 weeks, Sky Stack daily. Both last shipped on October 31, 2026.

## The numbers

| Metric | Whack Stack! | Sky Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (898 ratings)](https://appshunter.io/ios/app/whack-stack-smash-puzzle/id6790234266/reviews)** | — |
| Number of ratings | **898** | — |
| Positive reviews | 90.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 332 MB | 5 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Supercent, Inc.](https://appshunter.io/developer/1571435385) | [Ding-Yao Jheng](https://appshunter.io/developer/6799717682) |

## What reviewers say

### Whack Stack!

[App page](https://appshunter.io/ios/app/whack-stack-smash-puzzle/id6790234266)

A physics-based puzzle game where players aim a cannon to strategically knock down stacked structures. Master each level by finding weak points and triggering satisfying chain reactions for quick, engaging gameplay.

**Highlights:** Simple cannon aiming and shooting, Satisfying physics-based destruction, Strategic puzzle-solving, Chain reactions and falling blocks, Varied structures to demolish, Short, satisfying levels

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| staterdeal_0.99 | $0.99 | one-time |
| moneypack1_1.99 | $1.99 | one-time |
| valuepack_1.99 | $1.99 | one-time |
| stepup1_1.99 | $1.99 | one-time |
| stepup2_4.99 | $4.99 | one-time |
| superdeal_7.99 | $7.99 | one-time |
| moneypack2_7.99 | $7.99 | one-time |
| noads_9.99 | $9.99 | one-time |
| megapack_24.99 | $24.99 | one-time |
| ultimatespecial_44.99 | $44.99 | one-time |
| moneypack6_99.99 | $99.99 | one-time |


### Sky Stack

[App page](https://appshunter.io/ios/app/sky-stack-one-tap-tower/id6800795670)

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

**In-app purchases:** none


## Frequently asked questions

### Is Whack Stack! free?

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

### Is Sky Stack free?

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

### Do Whack Stack! or Sky Stack have ads?

Both Whack Stack! and Sky Stack show ads.

### Which is updated more often, Whack Stack! or Sky Stack?

Whack Stack! ships an update every 3 weeks, and Sky Stack daily. Most recently, Whack Stack! was updated on October 31, 2026 and Sky Stack on October 31, 2026.

---

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