# EQ550 vs TuneTheory

The clearest difference is update cadence: EQ550 at monthly against TuneTheory's every 6 months. EQ550 also leads on iOS requirement (10.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. EQ550 sells 1 one-off in-app purchase and TuneTheory sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

EQ550 ships an update monthly, TuneTheory every 6 months. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | EQ550 | TuneTheory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/eq550/id1507132030/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 5 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [Christopher Paul Cortez](https://appshunter.io/developer/1754198120) |

## 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 |


### TuneTheory

[App page](https://appshunter.io/ios/app/tunetheory/id6504881406)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TuneTheory Pro Metronome | $4.99 | one-time |
| Pro Tuner | $4.99 | one-time |
| Pro Studio | $9.99 | one-time |


## Frequently asked questions

### Is EQ550 free?

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

### Is TuneTheory free?

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

### Do EQ550 or TuneTheory have ads?

Neither EQ550 nor TuneTheory shows ads.

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

EQ550 ships an update monthly, and TuneTheory every 6 months. Most recently, EQ550 was updated on October 17, 2026 and TuneTheory on October 13, 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.*