Fragment is a fun App to train yourself to listen and read musical notes. Especially the relationship between the score and what you hear is practiced well with Fragment.
Well-known melodies have been cut into eight or nine separate parts (bars) and are mixed. You put the parts back together in the right order. The melodies vary in level of difficulty. You can choose which melody you want to begin with. More than one person can use Fragment, because you log in with your own name.
Choose a melody and have a good listen to it. Then put the parts in the right order. You can also listen to each part separately and easily swap it for another part. If the melody is correct, it is checked. Before you start, check the explanation (?) and the info (!).
Tip: make it even more difficult and sing or hum the separate parts or play them on your own musical instrument instead of listening to them on your tablet.