# FD vs GS

FD and GS both sit at 4.6 stars, but that hides the real split: 100% of GS's written reviews are positive against 67% of FD's. FD's advantage is update cadence (every 4 months vs every 17 months) and price ($9.99 vs $11.99). On rating, ratings volume, ads and in-app purchases there is nothing between them.

FD costs $9.99 and GS $11.99 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 — 4.6 for FD against 4.5 for GS. Both are backed by a comparable volume of ratings — 32 and 11 respectively. Written reviews are what separate them: 67% of FD's written reviews are positive against 100% of GS's.

FD ships an update every 4 months, GS every 17 months. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | FD | GS |
| --- | --- | --- |
| Price | **$9.99** | $11.99 |
| Rating | **[4.6 (32 ratings)](https://appshunter.io/ios/app/fd-1-filter-delay/id1448696965/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/gs-201/id1643866815/reviews) |
| Number of ratings | **32** | 11 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 61 MB | 10 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [Genuine Soundware](https://appshunter.io/developer/1560880481) |

## What reviewers say

### FD

[App page](https://appshunter.io/ios/app/fd-1-filter-delay/id1448696965)

This app is a semi-modular audio effect plugin featuring dedicated filter, delay, and modulation sections. It allows for the creation of rhythmic filter sequences and a wide range of complex audio effects through its flexible modulation matrix.

**Highlights:** Semi-modular effect plugin, Modulated filter section, Delay stage, Step sequencer, Low Frequency Oscillator, Mod matrix, Tempo sync

**Features:** Vision Pro support

**In-app purchases:** none


### GS

[App page](https://appshunter.io/ios/app/gs-201/id1643866815)

This audio plugin emulates the classic Space Echo tape delay effect for iOS devices. It aims to replicate the authentic sound and quirks of the original hardware, offering a vintage delay experience.

**Highlights:** AUv3 plugin for iOS, Emulates Space Echo tape delay, Authentic vintage sound, Basic controls mirroring original hardware, iPad platform compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FD free?

FD costs $9.99, with no in-app purchases.

### Is GS free?

GS costs $11.99, with no in-app purchases.

### Which has better reviews, FD or GS?

FD is rated higher. FD averages 4.6 out of 5 from 32 ratings, while GS averages 4.5 from 11 ratings.

### Do FD or GS have ads?

Neither FD nor GS shows ads.

### Which is updated more often, FD or GS?

FD ships an update every 4 months, and GS every 17 months. Most recently, FD was updated on October 1, 2026 and GS on October 11, 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.*