Tephra is a fast, open source JavaScript, Canvas & Audio implementation for Android.
(Think of it as a Browser that can only display a Canvas element)
It is also known as the Ejecta twin for Android and alot of early work came from Ejecta-X project.
Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size or emplacement mechanism.[1]
Tephra is published under the MIT Open Source License.
For iOS developers looking for Ejecta : http://impactjs.com/ejecta