# SF-1 Stereo Filter — user reviews

> 8 indexed App Store user reviews of SF by Kai Aras, rated 3.78/5 from 9 ratings.

- Source: https://appshunter.io/ios/app/sf-1-stereo-filter/id1461143028/reviews
- App overview in markdown: https://appshunter.io/ios/app/sf-1-stereo-filter/id1461143028.md
- Rating breakdown: 5★ 4 · 4★ 3 · 3★ 0 · 2★ 0 · 1★ 2

## Most critical reviews (8 lowest-rated)

### 1/5 — Should have stuck with FD-1

*2020-06-27*

I saw where someone complained about the GarageBand crashing but I figured a year after the developer responded it would have been fixed by now. Even in Cubasis 3 it’s very glitchy. Is it worth hoping for fixes in future updates?

### 3/5 — Good but broken in bm3

*2020-05-08, version 1.0*

Great sounding filter however I have a bug on BeatMaker 3 which makes it unusable.. clicking / clipping sound regardless of parameters. 

Would be great to have wider lfo speed, and ability to have tempo sync selectable for each lfo, and a comb filter would be cool too !

### 4/5 — Great Filter

*2020-04-27*

Don’t think because it’s free it’s not good.  I reach for it before the toneboosters dual VCF quite often because I get on well with the big knobs on the interface.  It sounds great to my ears and easy to get some modulation going.  This was good enough to convince me to get the RE-1 tape unit, which is a beast.

The FD-1 is my favorite though.  That thing is endless rhythmic and textural experimentation.  Pure brilliance.

### 5/5 — Lovely filter

*2020-05-02, version 1.0*

I really like SF-1.

A must have in anyone's kit.

### 5/5 — Brilliant...⭐️⭐️⭐️⭐️⭐️

*2020-04-13, version 1.0*

Just get it, it's brilliant
Awesome filters, thank you !!

### 5/5 — Mutron 3

*2019-09-18*

Great sounding filters. Versatile. Envelope following that feels right when comparing to hardware envelope followed filters. If you're looking for a Mutron 3 on iOS, this is very close.

### 5/5 — Crashes GarageBand

*2019-06-03*

This AUv3 Crashes GarageBand instantly but it’s a great, useful filter. Since GarageBand doesn’t have the best automation options, this will hopefully be really useful with the built in automation.

**Developer response:** Hey there, 
sorry about that GarageBand crash, a fix will be available later this week.

### 5/5 — Excellent

*2019-05-31, version 1.0*

Another 10/10 for Kai Aras. You keep ‘em coming, I’ll keep on buying ‘em. This is really impressive.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*