> The usual result with piano teaching apps of all kinds - as someone else commented below - is kids get up to Grade 1 (maybe 2) and then hit a brick wall. How

> The usual result with piano teaching apps of all kinds - as someone else commented below - is kids get up to Grade 1 (maybe 2) and then hit a brick wall. How many kids or adults who start with traditional piano lessons will actually make it past this level? I'm sure that it is the case that most people will eventually plateau using an app, but I doubt that a control group of people taking lessons would perform much better, and apps at least solve a problem of access. The vast majority of children and virtually all adults starting piano will never achieve a high level of musicianship, but their lives may well still be enriched by the musical knowledge they gain.