تمارين فيزياء كيمياء اولى باك is a free Android app developed by mehdi hicham, designed for high school science students. The app offers a comprehensive collection of exercises and solutions for all the lessons in the first year of high school, including physics and chemistry, for all scientific branches (Experimental Sciences and Mathematical Sciences).

The app is user-friendly and easy to navigate, and the exercises are organized according to the lessons and topics covered in the curriculum. Students can choose from a wide range of exercises and practice problems, with clear and detailed solutions provided for each one. The app is an excellent resource for students who want to improve their understanding of physics and chemistry concepts and prepare for exams.