Meh... This takes the fun out of it.... I have strings that are going on 3 years old and still work fine. I change em when they sound off/break ? not when science tells me to

The idea itself is actually cool though. But IMO it's just a solution to a problem that wasn't really there

A device will no doubt tune each each to a perfect pitch...
I tend to tune a couple of strings a touch flat...
My Grovers are also a bit tight and this little device is not gonna have the strength to turn them.