# DubFilter vs PolyIvoks Filter

The clearest difference is update cadence: PolyIvoks Filter at fortnightly against DubFilter's every 6 months. PolyIvoks Filter also leads on review sentiment (86% vs 73%) and iOS requirement (10.0 vs 17.0). DubFilter's advantage is ratings volume (71 vs 21). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for DubFilter against 4.7 for PolyIvoks Filter. Both are backed by a comparable volume of ratings — 71 and 21 respectively. Written reviews are what separate them: 73% of DubFilter's written reviews are positive against 86% of PolyIvoks Filter's.

DubFilter ships an update every 6 months, PolyIvoks Filter fortnightly. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | DubFilter | PolyIvoks Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews) | [4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews) |
| Number of ratings | **71** | 21 |
| Positive reviews | 73.3% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 17 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 |


### PolyIvoks Filter

[App page](https://appshunter.io/ios/app/polyivoks-filter/id1507649629)

This audio effect plugin emulates the sound of a legendary 1980s Soviet synthesizer filter. It offers stereo output and a range of modulation and envelope controls for creative sound shaping. A demo version is available with limited free play time.

**Highlights:** Standalone and AUv3 plugin, Modeled vintage filter, LFO and envelope modulation, Stereo output, Scalable GUI, Undo/Redo and A/B comparison

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS PolyIvoks Filter Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is DubFilter free?

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

### Is PolyIvoks Filter free?

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

### Which has better reviews, DubFilter or PolyIvoks Filter?

DubFilter and PolyIvoks Filter are both rated 4.7 out of 5 on the App Store, from 71 and 21 ratings respectively.

### Do DubFilter or PolyIvoks Filter have ads?

Neither DubFilter nor PolyIvoks Filter shows ads.

### Which is updated more often, DubFilter or PolyIvoks Filter?

DubFilter ships an update every 6 months, and PolyIvoks Filter fortnightly. Most recently, DubFilter was updated on September 22, 2026 and PolyIvoks Filter on September 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.*