Duong Bac is an indie developer on the App Store with 1 app. On IndieRank, they are ranked #138 out of 1,573 developers (top 9%). Their primary category is Photo & Video, with 0 total ratings and a 0.0★ weighted average. Their most popular app is Tu dien Anh Viet Oxford with 2 ratings and a 5.0★ score.