# PLAYnJAM vs PX1 FM Synth

The clearest difference is price: PLAYnJAM at Free against PX1 FM Synth's $14.99. PLAYnJAM also leads on iOS requirement (13.4 vs 17.6). PX1 FM Synth's advantage is update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

PLAYnJAM is free to download; PX1 FM Synth costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PLAYnJAM ships an update every 2 months, PX1 FM Synth every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PLAYnJAM | PX1 FM Synth |
| --- | --- | --- |
| Price | **Free** | $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 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 147 MB | 121 MB |
| Requires iOS | **13.4** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [iDance](https://appshunter.io/developer/1680177485) | [Peter Sjogren](https://appshunter.io/developer/1268263124) |

## What reviewers say

### PLAYnJAM

[App page](https://appshunter.io/ios/app/playnjam/id6447109498)

**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 PLAYnJAM free?

PLAYnJAM is free to download, with no in-app purchases.

### Is PX1 FM Synth free?

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

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

Neither PLAYnJAM nor PX1 FM Synth shows ads.

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

PLAYnJAM ships an update every 2 months, and PX1 FM Synth every 2 weeks. Most recently, PLAYnJAM was updated on November 3, 2026 and PX1 FM Synth on October 31, 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.*