# Rainbow Plug&Play DSP vs DSP sound master

The clearest difference is update cadence: Rainbow Plug&Play DSP at every 2 months against DSP sound master's every 9 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.

Rainbow Plug&Play DSP ships an update every 2 months, DSP sound master every 9 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Rainbow Plug&Play DSP | DSP sound master |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free | — |
| Size | 26 MB | 24 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rainbow Audio GmbH](https://appshunter.io/developer/1284821198) | [师贤 陈](https://appshunter.io/developer/1754678152) |

## What reviewers say

### Rainbow Plug&Play DSP

[App page](https://appshunter.io/ios/app/rainbow-plug-and-play-dsp/id6449861179)

This utility app allows users to operate and configure a specific audio device using Bluetooth Low Energy. It provides a direct connection for managing settings and functionality.

**Highlights:** Bluetooth LE operation, Audio device configuration, Direct connection, Settings management

**Features:** macOS Compatibility

**In-app purchases:** none


### DSP sound master

[App page](https://appshunter.io/ios/app/dsp-sound-master/id6511249208)

**In-app purchases:** none


## Frequently asked questions

### Is Rainbow Plug&Play DSP free?

Rainbow Plug&Play DSP is free to download, with no in-app purchases.

### Is DSP sound master free?

DSP sound master is free to download, with no in-app purchases.

### Do Rainbow Plug&Play DSP or DSP sound master have ads?

Neither Rainbow Plug&Play DSP nor DSP sound master shows ads.

### Which is updated more often, Rainbow Plug&Play DSP or DSP sound master?

Rainbow Plug&Play DSP ships an update every 2 months, and DSP sound master every 9 months. Most recently, Rainbow Plug&Play DSP was updated on November 3, 2026 and DSP sound master on October 27, 2026.

---

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