In computing education, assessment and feedback has always been an important element for effective learning and teaching. However, the quality of assessment and feedback is one of the major dissatisfactions for students in higher education since assessment is the most concerning agenda for students. It remains a challenge to provide individualised, richer and immediate formative feedback, especially in a large cohort of students. In addition, the pervasiveness of mobile technologies and students’usage of mobile devices lead to the digital gap between educators and students. Rethinking the use of mobile devices in classroom for personal assessment and feedback, this project aims to enhance the quality of the in-class assessment and feedback by designing and piloting an innovative mobile technology for computing education. With the analysis of ten current mobile apps that related to the research agenda, a web system integrated with Android mobile system, Newton, is designed and developed to improve the quality of assessment and feedback by increasing the interaction between lecturers and students. These assessment and feedback design are intended to be timely and effective in order to enhance the learning experiences. Both pedagogical and technical aspects are considered to deliver classroom innovation. Preliminary responses and reflections for the pilot study is reported in the paper.