I love it.
But in all seriousness, if you are looking for a good guitar tuner, a lot of the ones on the market are actually not very good.
I highly recommend TC Electronic for clip-on tuner, or Sonic Research or Peterson for pedal tuners.
source: playing guitar for 32 years
I use a Peterson strobe tuner on my smartphone, it's really good. I've also coded my own strobe tuner to learn more, unfortunately no mobile version yet.
https://github.com/dsego/strobe-tuner
Could you go into more detail on why they are bad?
The oboe playing a concert A is a pretty good one too.
I love my TC Electronic clip on tuner!