怪兽音符 - 五线谱识谱练习卡 app for iPhone and iPad
This is a music reading training tool specially built for beginners. With the built-in algorithm, you can easily train the reading speed from easy to difficult. You can click and input directly on the screen according to the roll name or note name, or you can connect to the MIDI interface of the electric piano and play the corresponding notes directly on the keyboard for training.