In under 2 weeks, playing a minute or two at a time a couple times a day, I raised my score from about 12 notes a minute to 52. Great app for practicing reading music. My only gripe is that there's no object for hearing the note. It might help one's musical ear greatly if there were an option for hearing the note displayed. They do have an extra app for ear training, but it would still be a nice feature.
Great to have it ads free!