WretchUp 4+

MoMinstruments GbR

    • 2.2 • 6 Ratings
    • $3.99



50% Sale 23.-28. November

An effect instrument anyone can play - sonic anarchy in the palm of your hand.

iOS Mars: "Barely controlled chaos“, "sonic extremes“, "well suited for live use“

Music App Blog: "if you like the occasional dose of sonic mayhem, then this is an app that will let you make it"

WretchUp is the sonic instrument from the imagination of Mouse on Mars Instruments. Used by the duo in their live performances, it's a playable effect inspired by analog hardware. Sing into it, speak into it, plug in an instrument, sample sounds, and then make sonic mayhem.

It's been tested in Mouse on Mars' live shows and used in studio albums. But now it's available to anyone - whether you're a musician wanting to create unique sounds or you just want to make some wild noises and frighten friends and enemies.


- Pitch-shifted delay with feedback and filter
- Unique controls, designed to be used in live performance and tested onstage
- Play with gestures, even without looking closely at the screen
- Record vocals or instruments from the built-in mic or another input
- Sample loops and change their speed
- Adjust the feedback loop, pitch, and filter for unique sounds
- Make inputs by holding down your finger, or lock input for continuous sampling
- Inter-App-Audio supported
- Audiobus supported


Features artwork by Rupert Smyth. Pure Data-based, open source patch created by Florian Grote and Peter Kirn with Mouse on Mars. App design by Oliver Greschke. Powered by free and open source software libpd.

Note: like all mic-based effects, you need to enable microphone input. If you accidentally did not allow mic input, you can allow later via: Device settings, WretchUp, Data settings, Microphone, allow mic input.

What’s New

Version 1.5

This app has been updated by Apple to display the Apple Watch app icon.

- iPad/Universal version

Ratings and Reviews

2.2 out of 5
6 Ratings

6 Ratings

Bob the butthead ,

App seems to have been abandoned

The app crashes immediately. It no longer works.

djAlpad ,

Wreck your noise!

This thing is pure evil.. Very crazy sound modulator.. Unlike anything else.

Still having issues with stability and the looper, but maybe it will get fixed

Gregor E ,

Love this app!

I just got this app and in the first 5 minutes it was really fun. I am a big fan of Mouse on Mars. Good job!

App Privacy

The developer, MoMinstruments GbR, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

You Might Also Like