TC Electronics PolyTune – Guitar Tuner on Your iPhone

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I like to carry my guitar with me everywhere. Of course, along with that, you have to tune the darn thing. Well, we all know you need to carry a guitar tuner as well. Why carry a separate tuner when you have an iPhone with you? TC Electronics PolyTune makes a great tuner that allows you tune your guitar at anytime. It is $4.99 in the iTunes store 

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