Gravity Assist Sim FREE

This application is a simulator can observe the motion of the satellite under gravity of the Earth and Moon.Please to put satellites into orbit to tap & drag. When you work well, you can have a satellite orbiting around the earth.You can also be simulated accelerated and decelerated gravity assist using the gravity of the Moon.The free version is the number of satellites can be put up to three at the same time, ads will be displayed.Paid version has no limit on the number of satellites can be put at the same time, advertising will not be displayed.It supports English and Japanese.