Surface Builder 4+

Auv3 MIDI Controller

Designed for iPad

    • 4.8 • 11 Ratings
    • $14.99



Surface Builder is a tool for creating control surfaces that send MIDI data to one or more audio components in order to simplify remote control tasks. You start by creating a surface of a given size, adding buttons, knobs, faders, etc. to the surface and configuring them to generate the required MIDI output. Surface Builder allows you to send note on/off, controller change and program change values as well as being able to emulate modulation wheel and pitch bend data. Buttons can also be configured to send bulk MIDI data using a single key press. You can build surfaces that span multiple scenes and link between them for large complex interfaces.

Incoming MIDI data can also be used to control or trigger elements of the interface, giving a bi-directional stream of MIDI data. Surface Builder can be added as a pure MIDI plugin which allows processing of MIDI only, or as an instrument plugin, allowing you to process audio passing through it. You can even load it as an intrument and configure a surface to start and stop audio clips either manually or remotely.

Surface Builder was designed to be used as an AUv3 plugin within your favourite DAW, but it can also be used in standalone to send MIDI directly to MIDI hardware using direct access to their MIDI ports.

Many different object types are supported including buttons, switches, lights, rotary knobs, faders, sliders, XY-Pad, keyboards, as well as text, image and box objects. Each object has many different styles and colours, so no two surfaces look the same.

Drag and drop an audio file onto a button and that button becomes a clip player. Attach rotary knobs to control the clips volume and pan. Throw on top of that a LP/HP filter knob and you are cooking on gas. Drop PNG transparent image icons on buttons to customise the look and feel.

A button can record and playback bulk MIDI commands, on both button press and release. So pressing a button could send the notes of a chord when pressed, and appropriate note offs on release.

A surface can consist of up to 6 scenes for really complex designs. Buttons and switches can be used to switch scenes and also to show and hide other objects to make better use of screen space. Once your surface is complete switch to presentation mode to hide all the toolbars. Each surface can be saved with compressed audio and images all in a single surface file.


○ AUv3 and standalone modes.
○ Bluetooth MIDI support.
○ Drag and Drop interface.
○ Send and Receive Note On/Off.
○ Supports all Control Change parameters.
○ Supports Program Change commands with bank support.
○ Multiple Audio Clip playback.
○ Record and playback bulk midi data.
○ Multi-Scene.
○ Multi-level undo/redo.
○ MIDI Monitor
○ Presentation Mode.
○ iPhone and iPad compatible.

What’s New

Version 1.13

v1.13 B64

Added the ability to view and edit captured data using the MIDI Recorder tool. This is handy for debugging SysEx Tone Packets.
Added a new demo surface to test sending of Tone Packets chords (handy for developers).
Minor correction to the help file.

1.12 B63

Fixed an issue with the Time Clock object not displaying correctly during a host count-in. The Time Clock, can now send MIDI events after elapsed time or repeated periodically when hosted inside a DAW.

Ratings and Reviews

4.8 out of 5
11 Ratings

11 Ratings

Motown_Steve ,

Great app. One little bug…

Incredibly flexible and highly functional. I’ve used another similar product that feels like an old Win95 application. Would *like* some flashier appearance options (But you *can* use a picture for backgrounds which is outstanding!) Easy to learn and a great complement to any hardware controller.

One little bug though. Setting any control to send a cc127 and then saving the changed value resets the value to cc0. Set it to cc126 and it saves fine.

Lil Woodryc ,

Kadar Woody

Good plugin but still kind of find it difficult. I was hoping that I can make my vocal sound like whatever audio I’ve import on here as reference audio and it doesn’t do anything to my vocals I’m only limited to the effects I can use and not the ones I want to create, I was really looking forward to re-creating plug-ins I don’t have access or affect. I just want to make for fun. I think there should be an option where we could just support reference audio and have the effect sound accurate to whatever we import like I think there should be a knob that allows me to import my own audio, it would make things easier so that way I can actually apply the effect I want to my vocals

EdZiPad ,

Super useful

I’ve been using it for a couple weeks and it’s super useful and very easy to use and set up. I have other apps that can send MIDI commands but I like this because it’s easy to set up a few buttons or knobs to control other apps in AUM, and control the transport, change presets, and other stuff across multiple apps from a single pane. I’m currently using it to control Hip-Hop Drummer. Great app with great support.

App Privacy

The developer,, 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.

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  • Family Sharing

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

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