# Raw Byte Audio Machine vs GRAB EM Field Synth

The clearest difference is update cadence: GRAB EM Field Synth at daily against Raw Byte Audio Machine's every 6 days. Raw Byte Audio Machine's advantage is price ($0.99 vs $3.99). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

Raw Byte Audio Machine costs $0.99 and GRAB EM Field Synth $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Raw Byte Audio Machine ships an update every 6 days, GRAB EM Field Synth daily. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Raw Byte Audio Machine | GRAB EM Field Synth |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/raw-byte-audio-machine/id6766166760/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Daily** |
| Monetization | Paid | Paid |
| Size | 2 MB | 2 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Callback Audio, LLC](https://appshunter.io/developer/1896220942) | [Hiroya Tanaka](https://appshunter.io/developer/1887542375) |

## What reviewers say

### Raw Byte Audio Machine

[App page](https://appshunter.io/ios/app/raw-byte-audio-machine/id6766166760)

This app generates complex musical patterns using a single sawtooth wave and a powerful expression engine. It supports binary and bitwise operations to create rhythms, harmonies, and melodies. Operates as a standalone app or an AUv3 instrument plugin.

**Highlights:** Sawtooth wave synthesis, Expression engine for sound design, Binary and bitwise operations, Rhythm, harmony, and melody generation, Standalone app, AUv3 instrument plugin

**Features:** Vision Pro support

**In-app purchases:** none


### GRAB EM Field Synth

[App page](https://appshunter.io/ios/app/grab-em-field-synth/id6773259322)

This experimental synthesizer uses your iPhone's magnetic sensor to capture ambient electromagnetic waves and transform them into sound. Explore unique soundscapes by "playing" the electromagnetic noise from everyday electronics like power adapters and Wi-Fi routers.

**Highlights:** Electromagnetic wave to sound conversion, Multi-layered sound engine, Sensor-linked synth voices, Camera-driven tremolo effect, Bitcrush, comb filter, reverb, stutter effects, Ableton Link tempo synchronization, 3D point cloud frequency spectrum visualization

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

**In-app purchases:** none


## Frequently asked questions

### Is Raw Byte Audio Machine free?

Raw Byte Audio Machine costs $0.99, with no in-app purchases.

### Is GRAB EM Field Synth free?

GRAB EM Field Synth costs $3.99, with no in-app purchases.

### Do Raw Byte Audio Machine or GRAB EM Field Synth have ads?

Neither Raw Byte Audio Machine nor GRAB EM Field Synth shows ads.

### Which is updated more often, Raw Byte Audio Machine or GRAB EM Field Synth?

Raw Byte Audio Machine ships an update every 6 days, and GRAB EM Field Synth daily. Most recently, Raw Byte Audio Machine was updated on October 13, 2026 and GRAB EM Field Synth on October 11, 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.*