Plazma
Plazma is a simple calming and relaxation app for people of ALL ages. It is visually stimulating and suitable for a range of abilities. Tap buttons to change effects. Plazma has no adverts, no settings screen and no in-app purchases.
Sensory Plazma is also available as a Chromebook App to download.
Plazma can be controlled by assistive technology switches that produce character codes (1, 2, 3, 4 & ~1, ~2, ~3, ~4) – all produce different changes. Plazma can be controlled by assistive technology switches that interface with Chromebook (probably bluetooth) that produce character codes (1, 2, 3, 4 , Space , Enter) – all produce different changes in effects of the app.