Indeed it's worth mentioning, to a general audience, that iRealPro only displays the harmonies (chord changes) for tunes, and not melodies. Whereas, "fake books

Indeed it's worth mentioning, to a general audience, that iRealPro only displays the harmonies (chord changes) for tunes, and not melodies. Whereas, "fake books" include both melody and harmony. The reason is that copyright only covers melody and lyrics, not harmony. So the harmonies are essentially public domain.