SpectrumGen is a unique spectral synthesizer designed for iPhone users, featuring a minimalistic pixel interface that allows users to visually create and manipulate sound. With its capability to draw sound spectrums while simultaneously playing them, it offers an engaging and interactive experience for music enthusiasts. The application supports exporting creations to WAV format, ensuring that users can save and share their musical compositions easily.

This tool includes eight predefined timbres and allows users to adjust the number of octaves from 2 to 8, catering to a variety of musical styles. Additionally, SpectrumGen supports MIDI keyboard input, as well as Audiobus and Inter-App Audio (IAA), making it a versatile addition to any multimedia toolkit. The color scheme used in the interface helps users distinguish between low frequencies represented by dark colors and high frequencies indicated by bright colors.