# Ringotron vs GSDSP Quantum Filter

The clearest difference is update cadence: GSDSP Quantum Filter at every 5 weeks against Ringotron's every 20 months. GSDSP Quantum Filter also leads on iOS requirement (12.0 vs 14.0). Ringotron's advantage is price ($8.99 vs $14.99) and ratings volume (15 vs 3). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Ringotron costs $8.99 and GSDSP Quantum Filter $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Ringotron against 5.0 for GSDSP Quantum Filter. That said, the two scores are not equally well evidenced: Ringotron has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Ringotron ships an update every 20 months, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on August 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Ringotron | GSDSP Quantum Filter |
| --- | --- | --- |
| Price | **$8.99** | $14.99 |
| Rating | [5.0 (15 ratings)](https://appshunter.io/ios/app/ringotron/id6474263444/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews) |
| Number of ratings | **15** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 4 MB | 77 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [quantovox](https://appshunter.io/developer/484686124) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Ringotron

[App page](https://appshunter.io/ios/app/ringotron/id6474263444)

This app offers advanced control over ring modulation effects for sound design and audio processing. Its multi-band design allows precise manipulation of the audio spectrum, with a special soft mode to reduce unwanted intermodulation. It can also function as a resonant filter that smoothly transitions into a ring modulator.

**Highlights:** Parallel ring modulator units, Stereo separation control, Ultra-narrow band resonance, Ribbon controls for frequencies, Modulation system for band centers, Tempo syncing for oscillators, Soft limiter and clipper

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

**In-app purchases:** none


### GSDSP Quantum Filter

[App page](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920)

This audio effect plugin offers analog-modeled filters with flexible routing and dynamic modulation for creative sound design. It provides extensive control over tone shaping and complex filtering with various filter types and configurations.

**Highlights:** Analog-modelled filters, 11 filter modes, Series and parallel routing, Dynamic modulation support, Stereo and dual mono modes, MIDI control integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ringotron free?

Ringotron costs $8.99, with no in-app purchases.

### Is GSDSP Quantum Filter free?

GSDSP Quantum Filter costs $14.99, with no in-app purchases.

### Which has better reviews, Ringotron or GSDSP Quantum Filter?

Ringotron and GSDSP Quantum Filter are both rated 5.0 out of 5 on the App Store, from 15 and 3 ratings respectively.

### Do Ringotron or GSDSP Quantum Filter have ads?

Neither Ringotron nor GSDSP Quantum Filter shows ads.

### Which is updated more often, Ringotron or GSDSP Quantum Filter?

Ringotron ships an update every 20 months, and GSDSP Quantum Filter every 5 weeks. Most recently, Ringotron was updated on August 29, 2026 and GSDSP Quantum Filter on September 22, 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.*