# PolyIvoks Filter vs Zen AutoPan

The clearest difference is in-app purchases: Zen AutoPan at none against PolyIvoks Filter's 1. PolyIvoks Filter's advantage is update cadence (fortnightly vs every 13 months) and iOS requirement (10.0 vs 15.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. PolyIvoks Filter sells 1 one-off in-app purchase. Zen AutoPan asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for PolyIvoks Filter against 4.6 for Zen AutoPan. Both are backed by a comparable volume of ratings — 21 and 14 respectively. Written reviews are what separate them: 86% of PolyIvoks Filter's written reviews are positive against 80% of Zen AutoPan's.

PolyIvoks Filter ships an update fortnightly, Zen AutoPan every 13 months. The most recent releases landed on October 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PolyIvoks Filter | Zen AutoPan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews)** | [4.6 (14 ratings)](https://appshunter.io/ios/app/zen-autopan/id6478596185/reviews) |
| Number of ratings | **21** | 14 |
| Positive reviews | **85.7% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 15 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [Tom Power](https://appshunter.io/developer/1629402664) |

## What reviewers say

### 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 |


### Zen AutoPan

[App page](https://appshunter.io/ios/app/zen-autopan/id6478596185)

This AUv3 stereo movement tool offers dynamic panning effects for music production and sound design. Sculpt your audio with multiple LFO shapes and an intuitive XY pad for real-time creative control. Seamlessly integrate with compatible DAWs on iOS devices.

**Highlights:** Multiple LFO Shapes, Intuitive XY Pad, Adjustable Stereo Width, AUv3 Compatibility, Optimized for iOS, 3D Visuals

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PolyIvoks Filter free?

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

### Is Zen AutoPan free?

Zen AutoPan is free to download, with no in-app purchases.

### Which has better reviews, PolyIvoks Filter or Zen AutoPan?

PolyIvoks Filter is rated higher. PolyIvoks Filter averages 4.7 out of 5 from 21 ratings, while Zen AutoPan averages 4.6 from 14 ratings.

### Do PolyIvoks Filter or Zen AutoPan have ads?

Neither PolyIvoks Filter nor Zen AutoPan shows ads.

### Which is updated more often, PolyIvoks Filter or Zen AutoPan?

PolyIvoks Filter ships an update fortnightly, and Zen AutoPan every 13 months. Most recently, PolyIvoks Filter was updated on October 1, 2026 and Zen AutoPan on September 9, 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.*