# NullPerator vs Sound With Bones

The clearest difference is update cadence: NullPerator at daily against Sound With Bones's every 3 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NullPerator ships an update daily, Sound With Bones every 3 days. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | NullPerator | Sound With Bones |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sound-with-bones/id6810039539/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 5 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [203 Systems](https://appshunter.io/developer/6810035880) | [No Worries! Lifestyle, LLC](https://appshunter.io/developer/1517663033) |

## What reviewers say

### NullPerator

[App page](https://appshunter.io/ios/app/nullperator/id6810035878)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound With Bones

[App page](https://appshunter.io/ios/app/sound-with-bones/id6810039539)

Create unique musical instruments by drawing physical structures. Hear your creations sing, then manipulate their mass and stiffness to shape the sound. Record and edit performances, or export your creations as audio files.

**Highlights:** Draw physical instruments, Shape sound by adjusting mass and stiffness, Record and edit performances, Export audio and editable workshops, Two-handed play with damping and pinning, Learn physics through sound experiments, AUv3 instrument for music apps

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

**In-app purchases:** none


## Frequently asked questions

### Is NullPerator free?

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

### Is Sound With Bones free?

Sound With Bones is free to download, with no in-app purchases.

### Do NullPerator or Sound With Bones have ads?

Neither NullPerator nor Sound With Bones shows ads.

### Which is updated more often, NullPerator or Sound With Bones?

NullPerator ships an update daily, and Sound With Bones every 3 days. Most recently, NullPerator was updated on October 6, 2026 and Sound With Bones on October 3, 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.*