Use as/for:

• Tool for Sound Design

• Experimental Musical Instrument

• Fun

Key Features:

• Fast and lightweight

• Four tracks

• Stereo Mode

• Loads sound files of up to seven minutes length in any audio format

• Effects like Convolution Reverb, Channel Vocoder, Phase Vocoder

First use instructions:

1. Press POWER. Upper right power button turns on audio engine which is TURNED OFF on startup to save battery.

2. Press EJECT. Load a sound file.

3. Press PLAY.

A manual can be found here: https://grainstorm.rocks.me

There is an In-App-Purchase which among other things lets you record the output. Please consider the free version as a demo version.