Co-designed with Berlin-based electronic musician Hainbach, Gauss brings the oldschool tape-looping art form to mobile devices. This creative field looper works both standalone and as an Audio Unit effect plugin and puts the possibilities of using looped tapes in your hands. Without the need for scissors.

Like real tape loops Gauss takes you off the grid of your DAW: you can adjust tape speed and direction, even during recording. The flow of your loops will drift organically as the tape follows its own cyclical timeline. 

Use overdub, or even multiple instances of the Audio Unit plugin, to create multi-layered ever changing sonic palettes.

We want this app to be a celebration of digital audio technology, so when audio quality is degraded it will do so in a pleasingly crunchy digital way. For example, recording on low tape speeds will give you longer recording time, but at the cost (or pleasure) of a distinctively lower recording quality. So Gauss mimics the behaviour - not the sound - of magnetic tape.

Set the length of the tape, record and overdub your audio, play around with tape speeds; Gauss captures the essence of two ends of tape stuck together in all its unsynchronised, free-running glory. There's even a unique built-in 4-step polyrhythmic sequencer for sequencing tape-speed changes.

- designed as a standalone field recorder and an Audio Unit effect plugin (AUv3) in one package
- universal app: plugin and standalone work on all iDevices, iOS11 and higher
- variable tape speed; seamlessly change direction and speed during playback or recording
- 4-step sequencer lets you trigger (polyrhythmic) tape-speed changes in sync with your host tempo
- variable inertia for the tape drive motors (from instant to very slow speed changes)
- built-in multi-mode filter with LFO modulation
- delay effect with optional host-sync mode
- “1989” mode uses a special 8 bit/11KHz tape head for a last-century vintage digital sound
- 45 seconds maximum loop size at 1x speed, proportionally longer at lower speeds (.e.g 90 seconds at half speed, etc.)
- overdub at any speed or tape direction
- plugin supports global cross-host preset handling (requires iOS13+, compatible AUv3 host)

Find the user manual at

What’s New

Version 1.1.1

- New AU Parameter exposed: "SNAP SPEED" for controlling the tape speed whilst always snapping to halves and multiples (octaves).
- Minor fixes and improvements

Ratings and Reviews

4.6 out of 5
61 Ratings

61 Ratings

polarpaul ,

Funky Looper

The app is perfect for all of your off kilter looping needs. You can do all sorts of transformations of your source audio from subtle to extreme. Nice straight forward GUI with all of the controls at your fingertips. Shape the sound frequencies and rhythms. You can record sessions as presets in the AU.

Resampling the output of your Gauss sessions is great when you can have a source instance of Gauss followed by an effects chain and another instance of Gauss where you record the output. After creating the recording, save it as a preset and change the audio source Gauss to the preset you just saved and reset the instance of Gauss for recording again (I have a couple of presets for my fav recording setups). Experiment with iterations of this to get your creative juices flowing.

The developer is in the process of exposing the transport AU parameters for even more MIDI based fun. I will be using this app a lot.

Enrique Raphaël Page Pérez ,

Thanks for the wonderful tool Bram!

I love Gauss it’s such an amazing app... the UI is also very beautiful, cheers on the amazing design in general.

I do have one thing to say:

I remember when Gauss launched, recording something inside of a host such as AUM and then lowering the tempo, would directly affect the playback speed of the recording. This is no longer the case! Recordings stay at the speed they were originally recorded even if the tempo changes.

I can understand this being a personal preference, but I was of the impression that that was the intended behavior wasn’t it? That was fantastic! It made a lot of sense for the tempo to affect playback speed of the Gauss instances.

I hope you can re-add this feature at least as an option in the future, I found it to be infinitely convenient so I am quite surprised to see it gone.

Hopefully you’ll consider it! 🙏🏻🙏🏻🙏🏻✔️

Developer Response ,

Thanks for the feedback! #1 is coming and #3 is already there (double-tap the loop length knob!)

Nogreatcrime ,

In the running with Drambo for App of the Year

Brams apps are at the top of the tops for their lightweight stability, excellent sound quality and full of useful features. This collab with Hainbach is no different. I can certainly feel a little of each of their personalities in this unit. Inspirational, interesting, clever and infinitely useful. I dont buy too many music apps anymore but along with Drambo this will be one of my apps of the year. Exceptional work Bram and Hainbach. A must have.

App Privacy

The developer, Bram Bos, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


Bram Bos
33.2 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



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    With Family Sharing set up, up to six family members can use this app.

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