# LM AUDIO vs EQ550

The clearest difference is in-app purchases: LM AUDIO at none against EQ550's 1. LM AUDIO also leads on iOS requirement (7.0 vs 10.0). EQ550's advantage is review sentiment (33% vs 0%) and update cadence (monthly vs every 3 months). On price, ads and device support there is nothing between them.

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

LM AUDIO ships an update every 3 months, EQ550 monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | LM AUDIO | EQ550 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (11 ratings)](https://appshunter.io/ios/app/eq550/id1507132030/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 20 MB |
| Requires iOS | **7.0** | 10.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PT. Kramat Motor](https://appshunter.io/developer/1280833868) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### LM AUDIO

[App page](https://appshunter.io/ios/app/lm-audio/id1118657152)

This application allows users to control various audio settings for car amplifiers with integrated DSP. Adjust EQ, bass, 3D sound, time alignment, and filters. Save and load sound settings directly from your phone or the amplifier.

**Highlights:** DSP control, EQ adjustment, Bass and 3D sound settings, Time alignment, Filter control, Save sound settings to phone, Save sound settings to amplifier

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is LM AUDIO free?

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

### Is EQ550 free?

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

### Do LM AUDIO or EQ550 have ads?

Neither LM AUDIO nor EQ550 shows ads.

### Which is updated more often, LM AUDIO or EQ550?

LM AUDIO ships an update every 3 months, and EQ550 monthly. Most recently, LM AUDIO was updated on October 24, 2026 and EQ550 on October 24, 2026.

---

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