Sổ tay Hóa học 11 is an Android app developed by Vinsofts Mobile Team that aims to assist high school students in Vietnam in preparing for the national chemistry exam. The app provides a summary of the chemistry curriculum for grade 11, along with features such as self-evaluation, online quizzes, study reminders, note-taking, and customization options.

The self-evaluation feature is a useful tool for students to assess their knowledge of chemistry. The online quizzes help students to quickly memorize the lessons. The study reminders feature helps students to keep track of their study schedule. The note-taking feature allows students to mark and take notes on the content they have studied. The app also provides customization options such as changing the font size and background color, making it easier to read. Overall, Sổ tay Hóa học 11 is a great app for high school students who want to prepare well for their chemistry exam.