There are several apps available that can help you learn about nuclear chemistry. Here are a few options:

1. Khan Academy: Khan Academy offers a comprehensive app that covers various subjects, including nuclear chemistry. It provides video lessons, practice exercises, and quizzes to help you understand the concepts.

2. Nuclear Chemistry App: This app is specifically designed to provide an in-depth understanding of nuclear chemistry. It covers topics such as nuclear reactions, radioactive decay, and nuclear energy. It includes interactive simulations and quizzes to enhance your learning experience.

3. Chem101: Chem101 is a chemistry learning app that covers various topics, including nuclear chemistry. It provides interactive lessons, practice problems, and quizzes to help you grasp the concepts effectively.

4. Nuclear Chemistry Handbook: This app is a comprehensive reference guide for nuclear chemistry. It includes detailed information about nuclear reactions, radioactivity, and nuclear energy. It also provides examples and practice problems to reinforce your understanding.

5. Nuclear Chemistry Flashcards: This app focuses on helping you memorize key concepts and terms related to nuclear chemistry. It provides flashcards with definitions, examples, and explanations to aid in your learning process.

Remember to choose an app that aligns with your learning style and preferences. Additionally, supplementing your app-based learning with textbooks, online resources, and interactive simulations can further enhance your understanding of nuclear chemistry.