# midiFILTr-VS for Volca Sample — AUv3 MIDI Effect

> AUv3 MIDI effect app for Volca Sampler to improve MIDI triggering and pitch control. (iPhone/iPad app by Arthur Kerns.)

- Source: https://appshunter.io/ios/app/midifiltr-vs-for-volca-sample/id1220579047 (this page in markdown: same URL + `.md`)
- Developer: [Arthur Kerns](https://appshunter.io/developer/998273840)
- Category: Music
- Price: $2.99
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.4 · 2 MB
- Languages: American English
- Released: 2017-04-04
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/midifiltr-vs-for-volca-sample/id1220579047/reviews.md

## What is midiFILTr?

midiFILTr-VS is an Audio Unit v3 MIDI Effect and CoreMIDI capable app that improves the MIDI capabilities of a hardware Volca Sampler. The Volca Sampler is notorious for having a unique MIDI spec that requires you to trigger individual parts on different MIDI channels. midiFILTr-VS allows you to trigger parts as you would normally expect to trigger a sampler.

midiFILTr-VS has three modes:
OCTAVE mode - C notes on any octave always trigger Volca part 1, C# triggers part 2, D triggers part 3, etc.
DRUM mode - The general MIDI drum spec is used to trigger the individual parts. Bass Drum triggers part 1, Snare part 2, Closed Hat part 9, etc.
PITCH mode - The Volca works normally triggering its 10 parts on 10 different MIDI channels. But instead of the Volca default of always playing that sample at the same pitch, the incoming note value will effect that sample's pitch.

The AUv3 also allows you to map note velocity to part volume, and provides AU parameters that map to the Volca’s MIDI CCs for easy control from your AU host

This app requires:
A hardware Volca Sampler
A hardware MIDI interface connected to the Sampler

An Audio Unit host that supports AUv3 MIDI Effects such as AudioBus or AUM is recommended for ease of use, though the app can also be configured with regular CoreMIDI.

## Key features

- AUv3 MIDI Effect
- CoreMIDI capable
- OCTAVE mode for part triggering
- DRUM mode for general MIDI spec triggering
- PITCH mode for sample pitch control
- Map note velocity to volume
- Map MIDI CCs to AU parameters

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/midifiltr-vs-for-volca-sample/id1220579047/reviews.md

### 5/5 — Simple, perfect

*2021-03-13, version 2.0.0*

This app feels like I got a Volca Sample V5 for free. Love it.

## Frequently asked questions about midiFILTr

### What is midiFILTr-VS for Volca Sample?

midiFILTr-VS for Volca Sample is an Audio Unit v3 MIDI Effect and CoreMIDI app designed to improve the MIDI capabilities of the Korg Volca Sample hardware. It allows for more intuitive triggering of sampler parts and offers advanced pitch and volume control.

### What are the different modes in midiFILTr-VS for Volca Sample?

midiFILTr-VS for Volca Sample features three modes: OCTAVE mode for triggering parts by C notes, DRUM mode for triggering parts via the general MIDI drum spec, and PITCH mode where incoming notes affect the sample's pitch.

### Does midiFILTr-VS for Volca Sample work without a Volca Sampler?

No, this app specifically requires a hardware Volca Sampler and a hardware MIDI interface connected to the sampler to function. It acts as an enhancement to the existing hardware.

### What devices is midiFILTr-VS for Volca Sample compatible with?

midiFILTr-VS for Volca Sample is compatible with iPhone, iPad, and iPod touch devices. It requires iOS 4.3 or later.

### How often is midiFILTr-VS for Volca Sample updated?

The latest version, 2.0.0, was released on September 4, 2019. The app was initially released on April 4, 2017.

### What is the price of midiFILTr-VS for Volca Sample?

midiFILTr-VS for Volca Sample is a paid application, available for $2.99. There are no in-app purchases or advertisements.

### What is the age rating for midiFILTr-VS for Volca Sample?

The app has an age rating of 4+, making it suitable for a wide range of users. This rating is based on its content and intended use.

### What is the user sentiment for midiFILTr-VS for Volca Sample?

User sentiment appears to be very positive, with the app holding a perfect 5.0-star rating from one review. This suggests users find it highly effective for its intended purpose.

## Version history (last 3 releases)

### 2.0.0 — 2019-09-04

Added AUv3 MIDI Effect
AUv3 includes velocity to part level option
AUv3 also includes support for MIDI CC control of the Volca Sample using AU parameters
Future updates to this app will focus on Apple's Audio Unit v3 MIDI Effect format rather than the AudioBus MIDI effect format. AUv3s are very well supported by AudioBus so using future versions of the app shouldn't be a problem, but you should probably start choosing to use the AUv3 version in your AB projects for future compatibility
Updated to latest Audiobus
Other misc fixes and updates

### 1.0.1 — 2017-05-04

Added MIDI clock mute mode, for when you want to prevent the Volca's internal sequencer from being started.
Bug fixes

### 1.0 — 2017-04-04

No release notes.

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## More apps by Arthur Kerns

- [midiLFOs - midi modulator](https://appshunter.io/ios/app/midilfos-midi-modulator/id998273841)
- [midiSTEPs](https://appshunter.io/ios/app/midisteps/id1001532047)
- [midiGATEs - midi probability](https://appshunter.io/ios/app/midigates-midi-probability/id1226296557)
- [midiDREAMs](https://appshunter.io/ios/app/mididreams/id1553799788)

All apps by Arthur Kerns: https://appshunter.io/developer/998273840

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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.*