# PX1 FM Synth vs PolyQuad

The clearest difference is price: PolyQuad at $6.99 against PX1 FM Synth's $7.99. On rating, ratings volume, update cadence and ads there is nothing between them.

PX1 FM Synth costs $7.99 and PolyQuad $6.99 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 PX1 FM Synth against 5.0 for PolyQuad. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | PX1 FM Synth | PolyQuad |
| --- | --- | --- |
| Price | $7.99 | **$6.99** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/px1-fm-synth/id6785258298/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/polyquad/id6803790337/reviews) |
| Number of ratings | 2 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Paid | Paid |
| Size | 121 MB | 4 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peter Sjogren](https://appshunter.io/developer/1268263124) | [LASZLO DOBROVOLSZKI](https://appshunter.io/developer/6779159106) |

## What reviewers say

### PX1 FM Synth

[App page](https://appshunter.io/ios/app/px1-fm-synth/id6785258298)

Create rich, wide stereo sounds with a dual-engine FM synthesizer. Explore classic 1980s digital synth tones, from electric pianos to metallic bells, with extensive operator and envelope controls. It functions as a standalone app or an AUv3 plugin for music production.

**Highlights:** Dual independent 6-operator FM engines, 32 classic FM algorithms, Per-operator envelopes and pan, Five macro knobs for sound shaping, Built-in reverb, AUv3 plugin support, Random patch generator

**Features:** Vision Pro support

**In-app purchases:** none


### PolyQuad

[App page](https://appshunter.io/ios/app/polyquad/id6803790337)

Create complex analog-style synthesizer sounds using four independent voices. Design each voice with its own oscillator, filter, and envelopes, then combine them in various modes for massive layered textures, polyphonic chords, or unique stereo arrangements. Explore a vast library of presets or build your own from scratch.

**Highlights:** Four independent analog-style voices, Multiple oscillator and filter types per voice, Dual envelope generators per voice, Three voice combination modes (UNI, POLY, 2x2), Extensive LFO modulation capabilities, Integrated effects unit (reverb, delay, chorus, phaser, drive), 160 factory presets and user preset management

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

**In-app purchases:** none


## Frequently asked questions

### Is PX1 FM Synth free?

PX1 FM Synth costs $7.99, with no in-app purchases.

### Is PolyQuad free?

PolyQuad costs $6.99, with no in-app purchases.

### Which has better reviews, PX1 FM Synth or PolyQuad?

PX1 FM Synth and PolyQuad are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do PX1 FM Synth or PolyQuad have ads?

Neither PX1 FM Synth nor PolyQuad shows ads.

### Which is updated more often, PX1 FM Synth or PolyQuad?

PX1 FM Synth ships an update every 2 weeks, and PolyQuad every 2 weeks. Most recently, PX1 FM Synth was updated on October 19, 2026 and PolyQuad on October 18, 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.*