Grainstorm

Grainstorm is a sound design tool and experimental musical instrument that turns your device into a creative audio workstation. Load any audio file and manipulate it in real time using four independent tracks, stereo processing, and professional effects.

Start with three simple steps: power on the audio engine from the upper right button, load a sound file using the eject control, and hit play. The app handles audio files up to seven minutes long in any format, making it versatile for sampling everything from field recordings to vocal loops.

Shape your sound with convolution reverb for spatial depth, a channel vocoder for voice-to-synth transformation, and phase vocoder effects for time-stretching and pitch manipulation. All processing runs fast and lightweight on your device, with minimal drain on battery when the audio engine is off.

The free version gives you full access to playback and effects, making it an excellent way to explore sound design and experimental music creation. An optional in-app purchase adds recording capabilities, letting you capture and export your creations.

Whether you're designing audio for projects, exploring granular synthesis techniques, or just playing with sounds for fun, Grainstorm provides the tools to experiment without complexity. Download Grainstorm today and start transforming audio.