# DubFilter vs RRS CL1

The clearest difference is update cadence: RRS CL1 at every 2 months against DubFilter's every 6 months. RRS CL1 also leads on iOS requirement (10.0 vs 17.0). DubFilter's advantage is rating (4.7 vs 4.5). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. DubFilter sells 1 one-off in-app purchase and RRS CL1 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. Both are backed by a comparable volume of ratings — 71 and 28 respectively. Written reviews complicate that: 73% of DubFilter's written reviews are positive against 77% of RRS CL1's, so the app with the better star average is not the one people write more warmly about.

DubFilter ships an update every 6 months, RRS CL1 every 2 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | DubFilter | RRS CL1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews)** | [4.5 (28 ratings)](https://appshunter.io/ios/app/rrs-cl1/id1639305828/reviews) |
| Number of ratings | **71** | 28 |
| Positive reviews | 73.3% of reviews | **76.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 19 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 |


### RRS CL1

[App page](https://appshunter.io/ios/app/rrs-cl1/id1639305828)

This audio effect plugin offers dynamic range compression with unique sonic coloration through saturation and dithering. It includes a limiter, equalizer, and advanced features like parallel compression and M/S mode for detailed audio manipulation.

**Highlights:** Dynamic range compression, Saturation with even harmonics, Dithering for 'air' effect, Limiting module for peak control, Mid-range equalizer, Parallel compression, M/S operational mode

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS CL1 Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is DubFilter free?

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

### Is RRS CL1 free?

RRS CL1 is free to download, with in-app purchases available.

### Which has better reviews, DubFilter or RRS CL1?

DubFilter is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while RRS CL1 averages 4.5 from 28 ratings.

### Do DubFilter or RRS CL1 have ads?

Neither DubFilter nor RRS CL1 shows ads.

### Which is updated more often, DubFilter or RRS CL1?

DubFilter ships an update every 6 months, and RRS CL1 every 2 months. Most recently, DubFilter was updated on October 7, 2026 and RRS CL1 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.*