# Pendulum Lab vs Sorting Visualizer

The clearest difference is price: Sorting Visualizer at Free against Pendulum Lab's $0.99. Sorting Visualizer also leads on in-app purchases (none vs 1). Pendulum Lab's advantage is update cadence (every 5 weeks vs every 6 months) and device support (3 vs 1). On ads there is nothing between them.

Sorting Visualizer is free to download; Pendulum Lab costs $0.99 up front. Pendulum Lab sells 1 one-off in-app purchase. Sorting Visualizer asks for nothing beyond the download.

Pendulum Lab ships an update every 5 weeks, Sorting Visualizer every 6 months. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Pendulum Lab | Sorting Visualizer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Size | 4 MB | 1 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [hyeonsu jeong](https://appshunter.io/developer/1628268684) | [Alexander Lee](https://appshunter.io/developer/1795808485) |

## What reviewers say

### Pendulum Lab

[App page](https://appshunter.io/ios/app/pendulum-lab/id6661026555)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Triple Pendulum Unlock | $0.99 | one-time |


### Sorting Visualizer

[App page](https://appshunter.io/ios/app/sorting-visualizer/id6743373810)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pendulum Lab free?

Pendulum Lab costs $0.99, and also offers in-app purchases.

### Is Sorting Visualizer free?

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

### Do Pendulum Lab or Sorting Visualizer have ads?

Neither Pendulum Lab nor Sorting Visualizer shows ads.

### Which is updated more often, Pendulum Lab or Sorting Visualizer?

Pendulum Lab ships an update every 5 weeks, and Sorting Visualizer every 6 months. Most recently, Pendulum Lab was updated on November 4, 2026 and Sorting Visualizer on October 25, 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.*