This study proposes a gamified augmented reality mobile app (GARMA) to support the learning of English among college students in China. The app provides different scenes for students to learn English in a real environment. Also, it incorporates 3D images and videos supported by AR technology in each scene. Furthermore, an AR map and a leaderboard are adopted to create a gamified learning environment. The objectives of this preliminary study are to measure the performance and acceptance of the app in English language learning. In this study, the app was tested by a group of college students, English teachers and AR technicians through a survey. Based on the findings of the survey, further interviews were conducted. The results of the study show the app has good performance. Moreover, the study also reveals that the college students and teachers have a good acceptance of the app.