SpectrumGen

SpectrumGen

by Alexander Zolotov

9 ratings
19 reviews
$0.99

Details

  • Released
  • Updated
  • August 16, 2011
  • October 3, 2025

Features

SpectrumGen screenshot #1 for iPhone
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About

Create unique sounds by drawing their spectral representation. This synthesizer offers real-time sound generation and export options, with customizable octaves and MIDI support for enhanced musical expression.

Draw sound spectrum in real-time
Export to WAV format
Eight predefined timbres
Adjustable octaves (2-8)
MIDI keyboard support
Audiobus and IAA compatible
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What's New in SpectrumGen

1.3f

October 3, 2025

optimization + bug fixes

Charts

Top Paid

📉 174-7

Music

This app dropped -7 positions in Music chart.

Last updated on July 18, 2026.

User reviews

Brilliantly creative

I tripped over this creation by accident, what a beautiful piece of work. Simple to use with seemingly infinite sound generational potential. I like having an on board record facility - simply copy and paste wherever you want without having to open DAWs and the like, recording on a whim is great. I love this.
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Cool concept

This app has a very cool concept. However, some things should be improved in an update.
- The default pitch is way to low. The first harmonic sould be 55 hz.
- The lower harmonics are way to dark. All of them should be like last harmonics.
- It would be cool if you could zoom in on certain harmonics since it's hard to be precise.
- may be all these things can already be changed, I don't know. These is no Voice over support.
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One of the great developers of this generation

This synth could be used on an Aphex Twin record, and then used happily by kindergarteners for hours. If you need source sound for virtually ANY purpose, snap this sucker right up. Sometimes when I’m “making music,” I come to a point where I’m just aimlessly pressing buttons, turning knobs sifting through sample libraries. If i put SpectrumGen in front of me, suddenly my nothing is given purpose. This developer has impressed the heck out of me and I have most of their apps, have not been let down yet. Thank you!
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Wicked!

Its wicked to be able to paint the spectrum of the sound you play! Its sounds crazy as hell and is better for “noisemaking” than “serious” music. I don’t like these terms, but i guess we all know what i mean. The midi function is handy and it would be cool, if we had the opportunity to switch to an in app keyboard, so playing the right notes is easier, if you want it. It would make the app more flexible!
The audiobus and iia function is very helpful! A AUv3 implementation would be mega rad though!

For the price, you cant do nothing wrong!
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Wonderful

If only sharing was easier this would be a 5 star.

Developer apps

FAQ

What is SpectrumGen?

SpectrumGen is a spectral synthesizer that allows users to draw the spectrum of sound and play it in real-time. It features a minimalistic pixel interface and offers various customization options for sound creation.

Can I export my creations from SpectrumGen?

Yes, SpectrumGen allows you to export your generated sounds in WAV format. This enables you to use your unique audio creations in other music production software or projects.

What devices is SpectrumGen compatible with?

SpectrumGen is compatible with iPhone, iPad, and iPod. It is designed to work on Apple's mobile and tablet devices.

Does SpectrumGen support MIDI input?

Yes, SpectrumGen supports MIDI keyboard input. This allows you to control the synthesizer using external MIDI keyboards for a more intuitive and expressive performance experience.

How does the color spectrum work in SpectrumGen?

In SpectrumGen, dark colors represent low frequencies, such as bass sounds, while bright colors represent high frequencies. This visual representation helps users understand and manipulate the sonic characteristics of their creations.

What is the price of SpectrumGen?

SpectrumGen is a paid application priced at $0.99. This one-time purchase grants you access to all of its features.

How often is SpectrumGen updated?

SpectrumGen was last updated on October 3, 2025, with version 1.3f. The app was initially released on August 16, 2011, indicating a history of development and support.

Does SpectrumGen have ads?

No, SpectrumGen does not contain advertisements. As a paid application, it provides an uninterrupted user experience without any ad interruptions.