Who is Phun?
Algodoo () is a physics-based 2D freeware sandbox from Algoryx Simulation AB (known simply as Algoryx) as the successor to the popular physics application Phun. It was released on September 1, 2009 and is presented as a learning tool, an open ended computer game, an animation tool, and an engineering tool. The software is functional with desktop and laptop computers, touch screen tablets, and interactive white board systems such as SMART Boards. The physics engine in Algodoo utilizes the SPOOK linear constraint solver by Claude Lacoursière and a modified version of Smoothed-Particle Hydrodynamics (SPH) computational method. On the App Store, it costs £4.99 and is only available for iPads. This program has been used by many people including educators, students, and children. Algodoo has remained as a popular choice from websites like List Of Freeware and Download Cloud for a physics sandbox program due to its complexity, simple GUI and free price.