My son came into the kitchen, tuning his classical guitar: “Dad, you like things that are pointlessly clever, don’t you?
“You know I do, son.”
“Check this out,” he said. My eye was drawn to the glowing guitar pick he was using…

It uses out-of-phase strobes to give visual feedback on the tuning of the string. Not a huge advancement over acoustic tuners, but as advertised, very clever.
I remember the first time I used a strobe timing light on an engine, and later a strobe tachometer. It gave me a feeling of cutting a privileged window through the temporal wall that is our persistence of vision, opening short-duration phenomena to the inquiring eye. Now, in guitar-pick form!
If it could do multiple kinds of tunings, instead of just standard, it might be a little more useful.
That’s a good price too, for any tuner, let alone one with eye candy. Agreed if it were more agile, it would be more useful.
I had to laugh because I could just picture you saying this in my mind.
“Dad, you like things that are pointlessly clever, don’t you?
“You know I do, son.”