This research aims to develop interactive simulations of Newton’s gravity concept that can improve student learning outcomes. This research is research and development. The research model referred to is the ADDIE model. This research has produced educational products in the form of interactive simulations of Newton’s concept of gravity. The educational product developed assists students in visualizing Newton’s concept of gravity. The results of theoretical validation obtained an average score of 91.3% with very good criteria. The score indicates that the research product that has been developed in general has a very good feasibility. The details for the material aspect are 93.8% and the media are 89.2%, with very good feasibility for each aspect. This shows that the interactive simulation of Newton’s gravity concept that has been developed has very good material quality, excellent media quality, and can be used in the learning process very well. The results of the implementation show that the educational product that has been successfully developed is also proven to improve student learning outcomes, especially in the Newtonian concept of gravity. The large increase that occurs after using the simulation is medium. It can be concluded that this research has produced educational products in the form of interactive simulations that are feasible to use and proven to be able to improve student learning outcomes on the Newtonian concept of gravity.