# EQ550 vs MPlus

The clearest difference is rating: MPlus at 5.0 against EQ550's 4.5. MPlus also leads on in-app purchases (none vs 1). EQ550's advantage is update cadence (monthly vs every 13 months) and ratings volume (11 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. EQ550 sells 1 one-off in-app purchase. MPlus asks for nothing beyond the download.

MPlus holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: EQ550 has 11 ratings behind it against 1, so its average is the more settled of the two.

EQ550 ships an update monthly, MPlus every 13 months. The most recent releases landed on October 24, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | EQ550 | MPlus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/eq550/id1507132030/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mplus-mixer/id1569944877/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 17 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [科 李](https://appshunter.io/developer/1098552099) |

## What reviewers say

### EQ550

[App page](https://appshunter.io/ios/app/eq550/id1507132030)

This audio effect plugin emulates classic American EQs from the late 1960s, offering precise control over equalization with unique Proportional Q technology. It functions as a standalone app or an AUv3 plugin for compatible hosts, providing a flexible and characterful sound shaping experience.

**Highlights:** Standalone and AUv3 plugin, 3 bands of classic American equalization, Proportional Q filter bandwidth, Stereo, Mid, or Side EQ modes, Undo/Redo and A/B comparison, Scalable GUI

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS EQ550 Unlimited | $4.99 | one-time |


### MPlus

[App page](https://appshunter.io/ios/app/mplus-mixer/id1569944877)

This app offers advanced audio mixing capabilities with a customizable interface and extensive control over input and output channels. It features real-time spectrum analysis, a signal generator, and multi-track recording, all accessible via a touch screen or network connection.

**Highlights:** Customizable TFT LCD display, Individual channel processing (gate, compressor, EQ, delay), Real-time spectrum analyzer (RTA), Signal generator (pink noise, sine wave, white noise), Multi-track USB recording, Scene management with 100 storage slots, Touchscreen and network control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EQ550 free?

EQ550 is free to download, with in-app purchases available.

### Is MPlus free?

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

### Which has better reviews, EQ550 or MPlus?

MPlus is rated higher. EQ550 averages 4.5 out of 5 from 11 ratings, while MPlus averages 5.0 from 1 ratings.

### Do EQ550 or MPlus have ads?

Neither EQ550 nor MPlus shows ads.

### Which is updated more often, EQ550 or MPlus?

EQ550 ships an update monthly, and MPlus every 13 months. Most recently, EQ550 was updated on October 24, 2026 and MPlus on September 28, 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.*