Guess it had to happen.  There’s now an iPhone app that allows one to ‘play’ a diatonic accordion, according to the site App.DownloadAtoZ.  Choose C or D and either conventional or wet tuning.  It’s $1.99, way cheaper than a Junior Martin or Marc Savoy model.  But I can’t imagine it will be nearly as satisfying to play.  No big wooden or other fancy case either, both an advantage and disadvantage.  Ah, modern times!