# Pendoly vs Sound Generator Lab

The clearest difference is price: Sound Generator Lab at Free against Pendoly's $3.99. Pendoly's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

Sound Generator Lab is free to download; Pendoly costs $3.99 up front. Sound Generator Lab sells 1 one-off in-app purchase. Pendoly asks for nothing beyond the download.

Pendoly ships an update every 2 months, Sound Generator Lab every 5 weeks. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Pendoly | Sound Generator Lab |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pendoly/id6755604764/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Paid | — |
| Size | 30 MB | 23 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Caroline Siegers](https://appshunter.io/developer/1854826310) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### Pendoly

[App page](https://appshunter.io/ios/app/pendoly/id6755604764)

This app transforms pendulum swings into musical compositions. Choose from various instrument sounds or create your own unique harmonies. Experience the blend of physics and music with high-quality, recorded instruments.

**Highlights:** Pendulum-driven music generation, Customizable harmonies, Multiple high-quality instrument sounds, Physics-based composition, Hand-recorded instruments

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound Generator Lab

[App page](https://appshunter.io/ios/app/sound-generator-lab/id6758279358)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Pendoly free?

Pendoly costs $3.99, with no in-app purchases.

### Is Sound Generator Lab free?

Sound Generator Lab is free to download, with in-app purchases available.

### Do Pendoly or Sound Generator Lab have ads?

Neither Pendoly nor Sound Generator Lab shows ads.

### Which is updated more often, Pendoly or Sound Generator Lab?

Pendoly ships an update every 2 months, and Sound Generator Lab every 5 weeks. Most recently, Pendoly was updated on October 11, 2026 and Sound Generator Lab on October 4, 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.*