For me, a tuner has to be a light, individual piece of equipment with an electric cord, and it should be very padded so if it falls on the harp it won’t ding it, or get damaged. I would like to have an oscilloscope function with the analysis of wave shape possible on them. I am used to having a needle show me the pitch. I need to know how many cents it is sharp or flat. I like Korg tuners for that. I don’t like strobe displays. I would be interested in helping you, but I am not putting a computer by my harp.
We also need to be able to regulate the pitch, is it a=440 or do we need it higher or lower? It is all the more useful if it is also a complex metronome, one less piece of equipment. I also like my Korg because it has temperament settings, not that I use them.