# Marble Slides vs Pencil Loop Sort

The clearest difference is in-app purchases: Pencil Loop Sort at none against Marble Slides's 1. Pencil Loop Sort also leads on iOS requirement (13.0 vs 15.0). Marble Slides's advantage is update cadence (daily vs every 4 days). On price, ads and device support there is nothing between them.

Both are free to download. Marble Slides sells 1 one-off in-app purchase. Pencil Loop Sort asks for nothing beyond the download.

Marble Slides ships an update daily, Pencil Loop Sort every 4 days. The most recent releases landed on September 9, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Marble Slides | Pencil Loop Sort |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 4 days |
| Size | 290 MB | 133 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | +4 |
| Developer | [Mild Games](https://appshunter.io/developer/1785143052) | [Umut Sahin](https://appshunter.io/developer/1669671425) |

## What reviewers say

### Marble Slides

[App page](https://appshunter.io/ios/app/marble-slides/id6757081621)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $7.99 | one-time |


### Pencil Loop Sort

[App page](https://appshunter.io/ios/app/pencil-loop-sort/id6757394298)

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

**In-app purchases:** none


## Frequently asked questions

### Is Marble Slides free?

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

### Is Pencil Loop Sort free?

Pencil Loop Sort is free to download, with no in-app purchases.

### Do Marble Slides or Pencil Loop Sort have ads?

Both Marble Slides and Pencil Loop Sort show ads.

### Which is updated more often, Marble Slides or Pencil Loop Sort?

Marble Slides ships an update daily, and Pencil Loop Sort every 4 days. Most recently, Marble Slides was updated on September 9, 2026 and Pencil Loop Sort on August 23, 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.*