# Protocol vs Chisel

The clearest difference is update cadence: Chisel at weekly against Protocol's every 2 months. Protocol's advantage is iOS requirement (18.0 vs 26.0). 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.

Protocol ships an update every 2 months, Chisel weekly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Protocol | Chisel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/protocol-sound-system/id6745834104/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | — |
| Size | 1 MB | 30 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [hsla0001](https://appshunter.io/developer/1778537322) | [Pouria Assadipour](https://appshunter.io/developer/1530457683) |

## What reviewers say

### Protocol

[App page](https://appshunter.io/ios/app/protocol-sound-system/id6745834104)

This app generates refined ambient noise with a unique tactile and visual experience. It offers precise control over sound frequencies and features an elegant particle system that responds to touch, designed for focus, calm, and sleep.

**Highlights:** Ambient noise generation, Touch-responsive particle system, Precise frequency control, Haptic feedback, Background playback, Media controls integration

**In-app purchases:** none


### Chisel

[App page](https://appshunter.io/ios/app/chisel-get-strong/id6811812088)

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

**In-app purchases:** none


## Frequently asked questions

### Is Protocol free?

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

### Is Chisel free?

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

### Do Protocol or Chisel have ads?

Neither Protocol nor Chisel shows ads.

### Which is updated more often, Protocol or Chisel?

Protocol ships an update every 2 months, and Chisel weekly. Most recently, Protocol was updated on October 30, 2026 and Chisel on October 29, 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.*