The Nuclear Bomb Simulator, also known as Nuke Simulator, is a free iPhone app developed by 方元 朱. This app is designed to provide users with a better understanding of the destructive effects of nuclear explosions and aid in evacuation planning.

The main feature of Nuke Simulator is its ability to calculate the areas affected by a nuclear explosion. It uses the nuclear explosion formula to estimate the approximate radiation radius and potential number of casualties. The app includes a comprehensive list of existing and past weapons, such as Fat Man, Little Boy, Tsar Bomba, and 28 other weapons, along with their respective yields.

Nuke Simulator is primarily developed for educational and awareness purposes. It serves as a valuable tool for those interested in learning about the devastating consequences of nuclear explosions and the importance of peace and planet preservation.