Just one more thing to pay for.
Just one more thing to break.
Clip-on tuners, stompbox tuners, rack tuners, amp top tuners, cell phone tuners, iPad tuners, etc. are plentiful and cheap/free. And there is another well crafted tuner that is free. It's called "ears". Half of the built-in tuners I've seen on acoustic guitars either don't work well, or don't work at all, and I still wind up putting them through my Peterson.
Bill, tgo