Synthesizer AUv3 iPad iPhone Apple Silicon Mac

App Store1624422460
AUv3 iPad/iPhone Apple Silicon Mac

NAMBU is a 6-operator FM synthesizer that supports AUv3 plug-ins. It's a semi-modular FM synthesizer that incorporates modern ideas, not designed to recreate the sound and workflow of a vintage FM synthesizer.

Click here for the manual...


Support for macOS 12 Monterey through macOS 14 Sonoma.
Compatible with Macs featuring the Apple M1 chip or later. Intel CPU Macs are not supported.
Supported from iPadOS 12 through iPadOS 17.
Supported from iOS 12 through iOS 17.

Free update installable on Apple Silicon Mac

If you have already purchased this App on your iOS device, you can download it to your Apple Silicon Mac for free as long as you use the same Apple ID as your iOS device.

More information

The App Store may display an app that should have been purchased as if it has not been purchased.

The App Store may not show that the app has been purchased on a different device than the device on which the app was purchased. (For example, when you purchase an app on an iPad and then install it on a Mac.)

However, as long as you are using the same Apple ID, you should be able to install it for free for the second and subsequent installations, even if it is on another device.

If you continue with the purchase process, the App Store should eventually confirm that you have made the purchase and you should be able to download the app for free, even if it appears as if it has not been purchased.

If you have further questions or concerns, I encourage you to contact Apple Support.

Important Notice

  • Depending on the parameter settings, a loud sound may be produced.
  • Please be aware that supported OS and devices are subject to change in future updates.
  • This product can be installed and used on multiple devices, including Mac, iPad, and iPhone, with a single purchase, as long as the same Apple ID is used for each device via the App Store. There is no limit to the number of devices on which the product can be installed.
  • This product supports only the AUv3 plug-in format; Other plug-in formats are not supported. It can be used with AUv3-compatible DAWs.
  • For inquiries regarding refunds after purchase, please contact App Store Support at
  • This product is not intended for accurately reproducing the sound of acoustic instruments or other synthesizers. It has been developed with a focus on creating the sound of this synthesizer itself.
  • This product does not support MPE (MIDI Polyphonic Expression).
  • NAMBU is not compatible with vintage FM synthesizers and you cannot import those presets into NAMBU.
  • Please note that NAMBU has higher CPU usage than other iceGear Apps.
  • Self-feedback of the FM operator is possible, but it is not possible to configure a feedback signal path with the matrix mixer.
  • This product primarily includes basic presets that serve as useful starting points for sound creation. Please note that it does not include a vast array of presets. Enjoy creating sounds with it.
  • This app has been confirmed to function properly with the latest OS version as of its last update. However, future OS updates may cause it to become inoperable or lead to malfunctions in some features. While updates to address issues caused by new OS versions are generally planned, it is not guaranteed that all problems can be resolved. Please be aware that the likelihood of providing fixes becomes more challenging, especially after the product has been discontinued.
  • Product appearance and specifications are subject to change without notice.

More Videos...


Block diagram

  • 6x Operators
  • 11x LFOs
  • 11x Envelopes
  • 2x Step sequencer
  • 3 Band EQ
  • Compressor
  • Saturator
  • Chorus
  • Delay
  • Reverb

6x Operators

Nambu has six operators. Each operator can be selected from six different types, including an FM operator for frequency modulation, an operator that mimics an analog synthesizer oscillator, noise, texture, resonator, and filter.

You can choose from 6 different operator types.

FM Operator

An FM operator that modulates the frequency of the oscillator with the input signal.

You can transform the waveform with Width, Bend, Invert, and Feedback parameters.

Self-feedback can be set individually for all operators.

arrow_forward VIDEO: FM Operator Demo


You can choose from 32 different waveforms.

Adjusts the width of the oscillator waveform.

Adjusts the bend of the oscillator waveform.

Oscillator Operator(Analog synthesizer style oscillator) + AM

The oscillator operator works similarly to the oscillators on analog synthesizers. It has pulse width modulation, oscillator sync, and a drift parameter that reproduces pitch instability.

Also, if there are any input signals, they are multiplied with the signal generated by this operator and output (AM: Amplitude Modulation).

arrow_forward VIDEO: OSC Operator Demo

Noise Operator + AM

It consists of a noise section that creates sustained noise such as white noise and digital noise, and an impulse section that creates crackling glitch noise.

arrow_forward VIDEO: Noise Operator Demo

Texture Operator + AM

An operator that reproduces texture sounds. These are mainly recorded sound effects, which are effective for the rising part of the sound.

You can also trigger the texture sound on note-off (You need to set the envelope so that it sounds after note off). This helps reproduce damper noise.

arrow_forward VIDEO : Click this link to hear what kind of textures are in Nambu.

Resonator Operator

A resonator operator that resonates the input signal at the frequency of the note. By inputting unpitched noise, you can create a sound similar to the sound of bowing a string or blowing a pipe. By inputting a short sound like an impulse, you can create a sound like a string being plucked.

arrow_forward VIDEO: Resonator Operator Demo

Filter Operator

The filter operator works similarly to the filter on analog synthesizers.

The filter operator has its own independent little ENV2.

arrow_forward VIDEO: Filter Operator Demo

Amplitude Modulators

Each operator has an LFO and an envelope generator that modulates its output volume.


This LFO modulates the volume of the operator.

Every operator has its own LFO that modulates its volume. These are different from the general purpose LFOs that can be selected with the "MOD" button.


This Envelope modulates the volume of the operator.

Every operator has its own envelope that modulates its volume. These are different from the general-purpose envelopes that can be selected with the "MOD" button.

Envelope Curves

You can adjust the curves of the envelope.

Modulations for the ENV parameters

Adjusts how much velocity or note number modulates the value of each parameter of the envelope.

Envelope Group

Operator envelope settings set in the same group are linked.

Operator Matrix Mixer

The Matrix mixer creates an operator network that is not limited to traditional "Algorithm" methods.

The matrix knobs adjust how much signal is sent from where to where. Self-feedback of the FM operator is possible, but it is not possible to configure a feedback signal path with the matrix mixer.

When you operate the matrix knob, a diagram showing operator connections is displayed in the upper right. The color intensity of the arrows connecting operators indicates the volume of the signal sent to that operator.

All Matrix volumes can be modulated with modulators.


Nambu does not have an "Algorithm" parameter like other FM synthesizers. It has a "Template" for initializing the operator network. You can adjust the matrix mixers to create even more complex operator networks.

General Purpose Modulators

Parameters with a "MOD" button can be modulated using general purpose modulators.

  • 4x LFOs
  • 4x Envelopes
  • 2x Step sequencer
  • 2x Keyboard scaling
  • 2x Velocities
  • 2x Macros

A pop-up window where you can adjust the modulation source and its modulation amount opens when you press the "MOD" button.



The envelope provided for the modulator can also be set to negative values.

Step Sequencer


In addition to "keyboard scaling" adjustments that close the filter in the higher frequencies, you can also create sounds that produce the bass sound in the lower range of the keyboard and the melody sound in the upper range.


In addition to "velocity scaling" adjustments that open the filter as you strike the keyboard harder, you can also create sounds that switch between tones depending on how hard you press the key.


By assigning the "Value" knob to a MIDI controller, you can control multiple parameters with a single knob.

Pitch Modulation




PreAmp (Compressor, Equalizer, Saturator)




Universal App

Compatible with Mac(Apple Silicon), iPad and iPhone.

Nambu can be installed on Macs with Apple silicon, but not on Macs with Intel CPUs. You can plug in host apps that support AUv3, such as Logic Pro, Garage Band, and Ableton Live.

Multiple layout UIs that are resizable and optimized for different screen sizes

Audio Unit Extension (AUv3)

This product supports only AUv3 plug-in format. You can use this AUv3 Plug-In in a host application that supports AUv3. Other plug-in formats are not supported.


  • MIDI Input
    • Core MIDI
    • Bluetooth MIDI
    • Virtual MIDI
  • MIDI Clock synchronization
  • MIDI Controller Mapping

Programmable Arpeggiator

You can easily create your own pattern.

Master Tune

You can adjust the pitch of the entire instrument.


You can change the equal temperament tuning scale to a different tuning.

Preset sharing

You can share your presets with other users. You can add presets created by other users to your preset library using the iOS Share Extension feature.


More Screenshots...


Tweaking Demo

Sound Demo