# Audio System vs Green Forum

The clearest difference is update cadence: Green Forum at every 2 months against Audio System's every 5 months. Audio System's advantage is iOS requirement (12.0 vs 15.0). 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, Green Forum every 2 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Audio System | Green Forum |
| --- | --- | --- |
| 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 | 58 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [春红 韦](https://appshunter.io/developer/1622353881) | [UNEP](https://appshunter.io/developer/1106793919) |

## 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


### Green Forum

[App page](https://appshunter.io/ios/app/green-forum/id6754513305)

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

**In-app purchases:** none


## Frequently asked questions

### Is Audio System free?

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

### Is Green Forum free?

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

### Do Audio System or Green Forum have ads?

Neither Audio System nor Green Forum shows ads.

### Which is updated more often, Audio System or Green Forum?

Audio System ships an update every 5 months, and Green Forum every 2 months. Most recently, Audio System was updated on October 8, 2026 and Green Forum on October 9, 2026.

---

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