# SpectrumGen > Pixel-interface spectral synthesizer for drawing and playing sound spectra. (iPhone/iPad app by Alexander Zolotov.) - Source: https://appshunter.io/ios/app/spectrumgen/id455656272 (this page in markdown: same URL + `.md`) - Developer: [Alexander Zolotov](https://appshunter.io/developer/324462547) - Category: Music, Entertainment - Price: $0.99 - Rating: 4.40/5 from 10 App Store ratings · 19 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 3 MB - Languages: American English - Released: 2011-08-16 - Data updated: 2026-09-03 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/spectrumgen/id455656272/reviews.md ## What is SpectrumGen? SpectrumGen is a spectral synthesizer with a minimalistic pixel interface. It's a bit like the PixelWave, but now you can draw the spectrum of sound! Key features: • it is possible to draw the spectrum and play it at the same time; • export to WAV; • eight predefined timbres; • changeable number of octaves (from 2 to 8); • MIDI keyboard support; • Audiobus and IAA support. Dark colors - low frequencies (bass). Bright colors - high frequencies. ## Key features - Draw sound spectrum in real-time - Export to WAV format - Eight predefined timbres - Adjustable octaves (2-8) - MIDI keyboard support - Audiobus and IAA compatible ## Recent user reviews (10 of 19) All indexed reviews: https://appshunter.io/ios/app/spectrumgen/id455656272/reviews.md ### 5/5 — Brilliantly creative *2025-09-16* 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. ### 3/5 — Cool concept *2021-04-19* 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. ### 5/5 — One of the great developers of this generation *2020-12-17* 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! ### 4/5 — Wicked! *2019-02-08* 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! ### 3/5 — Wonderful *2016-08-31* If only sharing was easier this would be a 5 star. ### 4/5 — Funny *2014-10-26* Petite appli sympathique! ### 5/5 — Spectrum Experiment App *2014-07-11* This thing is really FUN to mess with !!! Be sure to click on the little wrench to right, to try things like turning echo (reverb?) on or off. You can easily hear how different one set of frequencies at arbitrary amplitudes sounds distinct from the sounds produced by another set. Experiment -- your brain will like it and you'll a lot just intuitively... ### 3/5 — A musical toy *2014-05-25* Not really of use for complex projects, but good fun to play with. A toy when compared to author's larger app, Virtual ANS. Nic ### 4/5 — Very cool spectrum synth! *2013-08-23* Amazing little synth for the price. It's positively bursting with sci fi sounds and sonic possibility. The only thing holding back a five star review is the fact that the low frequencies are represented with the color black--on a black background! You can hardly see what you're drawing / manipulating down there. A more neutral background color could easily fox this. It would be really nice to be able to save patches too. ### 5/5 — So cool! *2013-06-03* Is app is amazing to play with... I can't believe it's only 99cents! You should buy it. ## Frequently asked questions about SpectrumGen ### 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. ## Version history (last 5 releases) ### 1.3f — 2025-10-03 optimization + bug fixes ### 1.3e — 2023-10-23 bug fixes ### 1.3c — 2020-03-17 bug fixes ### 1.2e — 2014-11-15 Fixed bug with iOS7 UI ### 1.2d — 2014-11-12 * Audiobus support on iOS8; * IAA support (partially). ## Apps similar to SpectrumGen | App | Rating | Price | Category | | --- | --- | --- | --- | | [Deep Synth : FM Synthesizer](https://appshunter.io/ios/app/deep-synth-fm-synthesizer/id1203273984) | 4.0 (2) | $4.99 | Music | | [Sonic Synth : FM synthesizer](https://appshunter.io/ios/app/sonic-synth-fm-synthesizer/id1104940736) | 3.0 (1) | $1.99 | Music | | [Chromatic Instrument Tuner](https://appshunter.io/ios/app/chromatic-instrument-tuner/id730565023) | — | $2.99 | Music | | [strng](https://appshunter.io/ios/app/strng/id993782289) | 4.7 (35) | $4.99 | Music | | [Famiguitar (Universal)](https://appshunter.io/ios/app/famiguitar-universal/id442076319) | 4.0 (1) | $0.99 | Music | | [MultiTone Generator PRO](https://appshunter.io/ios/app/multitone-generator-pro/id1143928697) | 4.9 (99) | $9.99 | Music | ## More apps by Alexander Zolotov - [SunVox](https://appshunter.io/ios/app/sunvox/id324462544) - [PixelWave](https://appshunter.io/ios/app/pixelwave/id447318771) - [PixiTracker](https://appshunter.io/ios/app/pixitracker/id480082201) - [PixiTracker 1Bit](https://appshunter.io/ios/app/pixitracker-1bit/id548659499) - [PixiVisor](https://appshunter.io/ios/app/pixivisor/id601279460) All apps by Alexander Zolotov: https://appshunter.io/developer/324462547 --- *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 2026-09-03.*