Stefan Borowicz Interesting! I wasn't aware of this app.
Frank Illenberger I'm an amateur who tunes my own pianos, so I put on noise cancellation headphones and I let pianoscope do all the work for me by tuning the unisons using freeze frame. The results of following this process sound great to me, but it would be awesome to have independent/objective validation of my results.
More importantly, I think this feature would be very useful to help identify which individual notes could use a touch up after a first pass tuning.