I was tired of tuning my guitar through Ableton or via my phone. Being a poor student, my eyes fell for the Baby Tuner.
It feels sturdy and well built. Actually , the "trigger" or button if you will gives me the impression of being even more robust than my more expensive pedals.
As far as I know/can tell , it is highly accurate. Nothing that my ears can pick out as being "inaccurate" on any level.
As for features, what else would you want? If you're looking for a tuner that can select and guide you to tune to specific tunings, this wont do it. But I see that as an advantage as you learn to "transpose" yourself.
In short, I highly recommend this pedal to anyone.