"دروس الفيزياء و الكيمياء مع التمارين التفاعلية" is a free Android app that offers simplified explanations of physics and chemistry lessons. The app covers topics such as mechanical waves, light wave, radioactive decay, nuclei, energy, mass, and electricity. In addition, it provides exercises that help to understand the lessons in-depth. The app includes practical exercises that range from simple to complex, and some exercises are combinations of two or more lessons, similar to the national exams. The app also has a set of exercises taken from national exams, especially in physics and chemistry, which gives students a solid understanding of how to deal with the national exam. The methodology of this app aims to break the barrier of difficult physics and chemistry concepts, making it easy for any student who works hard to get high grades in these subjects.