Caustic 3 is a music creation tool inspired by rack-mount synthesizers / samplers rigs. Everything is real-time and optimized for mobile devices. Create your rack by adding up to 14 machines from a choice of: Subsynth - Virtual analog subtractive synthesizer. PCMSynth - Multi-sample wave synthesizer. BassLine - 303-like monosynth. BeatBox - 8-channel sampling drum machine.