# DubFilter vs EQ550

The clearest difference is review sentiment: DubFilter at 73% against EQ550's 33%. DubFilter also leads on rating (4.7 vs 4.5) and ratings volume (71 vs 11). EQ550's advantage is update cadence (monthly vs every 6 months) and iOS requirement (10.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

DubFilter holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: DubFilter has 71 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 73% of DubFilter's written reviews are positive against 33% of EQ550's.

DubFilter ships an update every 6 months, EQ550 monthly. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | DubFilter | EQ550 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/eq550/id1507132030/reviews) |
| Number of ratings | **71** | 11 |
| Positive reviews | **73.3% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 20 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Amazing Noises](https://appshunter.io/developer/903336421) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### DubFilter

[App page](https://appshunter.io/ios/app/dubfilter/id979648058)

This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.

**Highlights:** Dual low-pass/high-pass filter, Resonance and Overlap parameter, Stereo sample player with LFO, Scrubbing capabilities, Audiobus and Inter-App Audio support, MIDI control and file management, Preset morphing pad

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Unit Plugin Support | $1.99 | one-time |


### 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 DubFilter free?

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

### Is EQ550 free?

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

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

DubFilter is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while EQ550 averages 4.5 from 11 ratings.

### Do DubFilter or EQ550 have ads?

Neither DubFilter nor EQ550 shows ads.

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

DubFilter ships an update every 6 months, and EQ550 monthly. Most recently, DubFilter was updated on October 7, 2026 and EQ550 on October 1, 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.*