# KQ Audio Player vs PX1 FM Synth

The clearest difference is price: KQ Audio Player at $4.99 against PX1 FM Synth's $7.99. KQ Audio Player also leads on update cadence (weekly vs every 2 weeks). On rating, ratings volume, ads and in-app purchases there is nothing between them.

KQ Audio Player costs $4.99 and PX1 FM Synth $7.99 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 KQ Audio Player against 5.0 for PX1 FM Synth. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

KQ Audio Player ships an update weekly, PX1 FM Synth every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KQ Audio Player | PX1 FM Synth |
| --- | --- | --- |
| Price | **$4.99** | $7.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/kq-audio-player/id6743190146/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/px1-fm-synth/id6785258298/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Paid | Paid |
| Size | 17 MB | 121 MB |
| Requires iOS | **17** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ryouta Kira](https://appshunter.io/developer/862984358) | [Peter Sjogren](https://appshunter.io/developer/1268263124) |

## What reviewers say

### KQ Audio Player

[App page](https://appshunter.io/ios/app/kq-audio-player/id6743190146)

A music player designed for practice and everyday listening. Offers advanced playback controls like speed and pitch adjustment, along with library management and custom settings for individual tracks. Supports various audio file formats.

**Highlights:** Music playback, Library folders, Playlist creation, Playback speed control, Pitch adjustment, Marker Function, A-B Repeat Between Markers, Equalizer function

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is KQ Audio Player free?

KQ Audio Player costs $4.99, with no in-app purchases.

### Is PX1 FM Synth free?

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

### Which has better reviews, KQ Audio Player or PX1 FM Synth?

KQ Audio Player and PX1 FM Synth are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do KQ Audio Player or PX1 FM Synth have ads?

Neither KQ Audio Player nor PX1 FM Synth shows ads.

### Which is updated more often, KQ Audio Player or PX1 FM Synth?

KQ Audio Player ships an update weekly, and PX1 FM Synth every 2 weeks. Most recently, KQ Audio Player was updated on October 24, 2026 and PX1 FM Synth on October 25, 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.*