# PX1 FM Synth vs LogSynth

The clearest difference is update cadence: LogSynth at every 4 days against PX1 FM Synth's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

PX1 FM Synth costs $14.99 and LogSynth $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PX1 FM Synth ships an update every 2 weeks, LogSynth every 4 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PX1 FM Synth | LogSynth |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/px1-fm-synth/id6785258298/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Paid | — |
| Size | 121 MB | 22 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peter Sjogren](https://appshunter.io/developer/1268263124) | [SEAN IAN HALENWOOD](https://appshunter.io/developer/1896371669) |

## 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


### LogSynth

[App page](https://appshunter.io/ios/app/logsynth/id6792552386)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PX1 FM Synth free?

PX1 FM Synth costs $14.99, with no in-app purchases.

### Is LogSynth free?

LogSynth costs $14.99, with no in-app purchases.

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

Neither PX1 FM Synth nor LogSynth shows ads.

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

PX1 FM Synth ships an update every 2 weeks, and LogSynth every 4 days. Most recently, PX1 FM Synth was updated on October 8, 2026 and LogSynth on October 10, 2026.

---

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