# Phase Modulator vs Recursion by folina

The clearest difference is price: Phase Modulator at $1.99 against Recursion by folina's $3.99. Recursion by folina's advantage is iOS requirement (15.0 vs 17.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Phase Modulator costs $1.99 and Recursion by folina $3.99 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 Phase Modulator against 5.0 for Recursion by folina. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

## The numbers

| Metric | Phase Modulator | Recursion by folina |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/phase-modulator/id6780734729/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/recursion-by-folina/id6814180831/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | Paid | Paid |
| Size | 8 MB | 15 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Callback Audio, LLC](https://appshunter.io/developer/1896220942) | [Jeremy Phillips](https://appshunter.io/developer/6777857703) |

## What reviewers say

### 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


### Recursion by folina

[App page](https://appshunter.io/ios/app/recursion-by-folina/id6814180831)

This app creates evolving echoes and feedback effects by mutating sound over generations. It offers unique control over timing, memory, and signal degradation for creative sound design. Explore subtle echoes to unstable ambient spaces.

**Highlights:** Self-mutating recursive delay, Generational sound evolution, Independent control over recursion depth, Continuous drift and instability, Smearing for evolving washes, Tear events for abrupt mutations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Phase Modulator free?

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

### Is Recursion by folina free?

Recursion by folina costs $3.99, with no in-app purchases.

### Which has better reviews, Phase Modulator or Recursion by folina?

Phase Modulator and Recursion by folina are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Phase Modulator or Recursion by folina have ads?

Neither Phase Modulator nor Recursion by folina shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*