# Audio System vs 4.2P SP

The clearest difference is update cadence: 4.2P SP at every 2 months against Audio System's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Audio System ships an update every 5 months, 4.2P SP every 2 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Audio System | 4.2P SP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 137 MB | 6 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [春红 韦](https://appshunter.io/developer/1622353881) | [健雏 何](https://appshunter.io/developer/1744074712) |

## What reviewers say

### Audio System

[App page](https://appshunter.io/ios/app/audio-system/id1580907978)

Control your Audio System speaker devices, amplifiers, and WiFi products. Stream music from various services, manage playback modes, and adjust volume and audio settings for a seamless audio experience.

**Highlights:** Control speaker devices and amplifiers, Manage WiFi audio products, Team playback for multiple devices, Switch audio source modes (WiFi, Bluetooth, Aux, HDMI, Optical), Adjust volume, left/right channel, Stream from iHeartRadio, Spotify, Qobuz, TIDAL, Tunein, Napster, Play locally stored music

**In-app purchases:** none


### 4.2P SP

[App page](https://appshunter.io/ios/app/42p-sp/id6502673270)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Audio System free?

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

### Is 4.2P SP free?

4.2P SP is free to download, with no in-app purchases.

### Do Audio System or 4.2P SP have ads?

Neither Audio System nor 4.2P SP shows ads.

### Which is updated more often, Audio System or 4.2P SP?

Audio System ships an update every 5 months, and 4.2P SP every 2 months. Most recently, Audio System was updated on October 8, 2026 and 4.2P SP on October 7, 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.*