# Big Stuff Harmonic Distortion vs Zen AutoPan

The clearest difference is rating: Big Stuff Harmonic Distortion at 5.0 against Zen AutoPan's 4.7. Big Stuff Harmonic Distortion also leads on review sentiment (100% vs 80%). Zen AutoPan's advantage is update cadence (every 13 months vs every 40 months) and monetization model (free vs ad-supported). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Big Stuff Harmonic Distortion holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 12 and 15 respectively. Written reviews point the same way: 100% of Big Stuff Harmonic Distortion's written reviews are positive against 80% of Zen AutoPan's.

Big Stuff Harmonic Distortion ships an update every 40 months, Zen AutoPan every 13 months. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Big Stuff Harmonic Distortion | Zen AutoPan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/big-stuff-harmonic-distortion/id6449679430/reviews)** | [4.7 (15 ratings)](https://appshunter.io/ios/app/zen-autopan/id6478596185/reviews) |
| Number of ratings | 12 | **15** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 13 months** |
| Monetization | Ad-supported | **Free** |
| Size | 30 MB | 15 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nembrini Audio](https://appshunter.io/developer/1493296895) | [Tom Power](https://appshunter.io/developer/1629402664) |

## What reviewers say

### Big Stuff Harmonic Distortion

[App page](https://appshunter.io/ios/app/big-stuff-harmonic-distortion/id6449679430)

This app emulates the sound of a legendary vintage distortion pedal, offering a violin-like sustaining tone. It functions as a standalone application, an AudioUnit v3 effect, or an Inter-App Audio effect for versatile music production.

**Highlights:** Vintage distortion emulation, Sustaining violin-like tone, Standalone app functionality, AudioUnit v3 effect, Inter-App Audio effect

**Features:** Vision Pro support

**In-app purchases:** none


### 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 Big Stuff Harmonic Distortion free?

Big Stuff Harmonic Distortion is free to download, with no in-app purchases.

### Is Zen AutoPan free?

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

### Which has better reviews, Big Stuff Harmonic Distortion or Zen AutoPan?

Big Stuff Harmonic Distortion is rated higher. Big Stuff Harmonic Distortion averages 5.0 out of 5 from 12 ratings, while Zen AutoPan averages 4.7 from 15 ratings.

### Do Big Stuff Harmonic Distortion or Zen AutoPan have ads?

Neither Big Stuff Harmonic Distortion nor Zen AutoPan shows ads.

### Which is updated more often, Big Stuff Harmonic Distortion or Zen AutoPan?

Big Stuff Harmonic Distortion ships an update every 40 months, and Zen AutoPan every 13 months. Most recently, Big Stuff Harmonic Distortion was updated on October 18, 2026 and Zen AutoPan on October 21, 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.*