9Study - Luyện thi Đại học is an education app by CÔNG TY TNHH ONE LAB with 1,000+ downloads (about 2.4K estimated). +200 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Study, practice with sample questions, and check admissions information conveniently with 9Study.”