# FET Acoustic Compressor vs Phase Modulator

The clearest difference is price: Phase Modulator at $1.99 against FET Acoustic Compressor's $5.99. FET Acoustic Compressor's advantage is iOS requirement (13.0 vs 17.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

FET Acoustic Compressor costs $5.99 and Phase Modulator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for FET Acoustic Compressor against 5.0 for Phase Modulator. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

## The numbers

| Metric | FET Acoustic Compressor | Phase Modulator |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/fet-acoustic-compressor/id6763790891/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/phase-modulator/id6780734729/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | Paid |
| Size | 9 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shelbybark LLC](https://appshunter.io/developer/1895490257) | [Callback Audio, LLC](https://appshunter.io/developer/1896220942) |

## What reviewers say

### FET Acoustic Compressor

[App page](https://appshunter.io/ios/app/fet-acoustic-compressor/id6763790891)

This app emulates the warm, musical character of classic FET compressors for acoustic instruments and more. It offers intuitive controls for punch, presence, and glue, with a special "All-In" mode for aggressive sounds. Designed for mobile studios and live performance.

**Highlights:** Classic FET compression emulation, Voiced for acoustic guitar, versatile for other instruments, Intuitive controls: IN, ATTACK, RELEASE, RATIO, OUT, DRY, SC HPF, Special "All-In" mode for aggressive sounds, AUv3 plugin support for popular DAWs, Low latency for live performance, Factory presets included

**In-app purchases:** none


### Phase Modulator

[App page](https://appshunter.io/ios/app/phase-modulator/id6780734729)

This app generates complex audio textures and tones by manipulating the phase of a carrier oscillator with a modulating signal. It offers two distinct modes: internal oscillator-to-oscillator modulation or using your audio input as the modulation source. Explore a wide range of sonic possibilities from shimmering harmonics to dense, inharmonic spectra.

**Highlights:** Phase modulation synthesis, Internal carrier and modulator oscillators, Audio input as modulation source, Adjustable carrier and modulator frequencies, Modulation index control, Selectable oscillator waveforms, Amplitude tracking of input audio

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is FET Acoustic Compressor free?

FET Acoustic Compressor costs $5.99, with no in-app purchases.

### Is Phase Modulator free?

Phase Modulator costs $1.99, with no in-app purchases.

### Which has better reviews, FET Acoustic Compressor or Phase Modulator?

FET Acoustic Compressor and Phase Modulator are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do FET Acoustic Compressor or Phase Modulator have ads?

Neither FET Acoustic Compressor nor Phase Modulator shows ads.

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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.*