iPhysics Sandbox is described as 'Simplistic physics sandbox (go figure). Depending on your personal setting configuration, its possible to get iPhysics engine to calculate every little attribute of every little object' and is an app in the education & reference category. There are nine alternatives to iPhysics Sandbox for a variety of platforms, including Windows, Android, iPad, Mac and Web-based apps. The best iPhysics Sandbox alternative is The Powder Toy, which is both free and Open Source. Other great apps like iPhysics Sandbox are Algodoo, Sandboxels, Crayon Physics Deluxe and sandspiel.