I designed the learning support web app Quodl, which allows university lecturers to run live in-class quizzes, giving helpful supportive feedback to students and using simple gamification to encourage attendance and engagement. Quodl has been used with over 1,500 students, and its earliest professionally-built incarnation was runner up in the Guardian University Awards 2017. You can find the web app here.
Lots more coming soon. In the meantime you can find out about the rationale, research and functionality behind the web app from a talk I gave a while back here: