The one
There are quite fancy apps teaching rhythm but they don’t make you learn, they make you repeat short patterns until you do it good enough. Also they space the notes according to the tempo and that’s cheating. This app doesn’t help you, it just show patterns like on a sheet and lets you know how precise you are. Much better to learn for real. I wish once you do a pattern you can, repeat as much as needed with a single click rather that coming back in the menu all the time.