# Marble Machine vs SlapDuck

The clearest difference is in-app purchases: SlapDuck at none against Marble Machine's 4. SlapDuck also leads on update cadence (fortnightly vs every 5 weeks). Marble Machine's advantage is iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Marble Machine sells 4 one-off in-app purchases. SlapDuck asks for nothing beyond the download.

Marble Machine ships an update every 5 weeks, SlapDuck fortnightly. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Marble Machine | SlapDuck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 104 MB | 56 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Matthias Wutschke](https://appshunter.io/developer/673202919) | [Slapduck Games LLC](https://appshunter.io/developer/1802714695) |

## What reviewers say

### Marble Machine

[App page](https://appshunter.io/ios/app/marble-machine/id989635348)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertisement removal | $0.99 | one-time |
| Explorer Level Pack | $1.99 | one-time |
| Puzzler Level Pack | $1.99 | one-time |
| Rolling Skills Level Pack | $1.99 | one-time |


### SlapDuck

[App page](https://appshunter.io/ios/app/slapduck/id6745585780)

**In-app purchases:** none


## Frequently asked questions

### Is Marble Machine free?

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

### Is SlapDuck free?

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

### Do Marble Machine or SlapDuck have ads?

Both Marble Machine and SlapDuck show ads.

### Which is updated more often, Marble Machine or SlapDuck?

Marble Machine ships an update every 5 weeks, and SlapDuck fortnightly. Most recently, Marble Machine was updated on October 1, 2026 and SlapDuck on October 4, 2026.

---

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