Ôn thi đại học môn Hóa học Of is a free Android app developed by Vinsofts Mobile Team. The app is designed to help students prepare for the national high school graduation exam in Vietnam, specifically for the subject of Chemistry. It offers various features that are useful for test preparation, including a summary of the 12th-grade Chemistry curriculum, an evaluation tool to assess knowledge, a test practice section, and a study reminder function.

The summary section provides a comprehensive overview of the 12th-grade Chemistry curriculum, which is helpful for students to review and consolidate their knowledge. The evaluation tool allows students to assess their knowledge level and track their progress. The test practice section includes Chemistry tests that have been curated by BaiTap123.com, which helps students become more familiar with the exam format. The study reminder function is also helpful, as it reminds students of their study schedule, exam dates, and other important events related to the national high school graduation exam.