Lava Lamp Plazma is a simple stimulation app for people with special/complex needs (including autism) of ALL ages. It is visually stimulating and suitable for a range of abilities. Plazma is switch accessible. Tap buttons to change effects. Plazma has no adverts, no settings screen and no in-app purchases. Switch box compatibility: Plazma can be controlled by assistive technology switches that produce character codes (1, 2, 3, 4 & ~1, ~2, ~3, ~4) - all produce different changes. To join our enews list, see videos and more Sensory Apps visit www.sensoryapphouse.com