Giải bài tập Hóa is a free Android app developed by Toan Phan that automatically solves high school chemistry problems. Users can input the problem by voice, typing, or copying from another source, and the app will provide the solution. The app can solve both inorganic and organic chemistry problems, balance redox reactions, and identify inorganic compounds (by balancing and identifying in the inorganic section). However, it is important to note that the app can only solve problems of medium difficulty or lower.

When inputting the problem, users must ensure accurate spelling and input of chemical formulas, including distinguishing between uppercase and lowercase letters. The problem must be inputted in Unicode format. If using voice input, users must double-check the accuracy of the input before pressing "Solve." If the problem cannot be solved, users should input a different problem and not judge the app based on the first unsuccessful attempt. For more information, users can visit the developer's Facebook page to watch demo videos.