|Here's a neat chromatic tuner developed by some friends that works just like a store-bought electronic tuner. All you need to do is watch the needle. When it points straight up and the light turns green, you're in tune. Just make sure that you're aware of the note that is being displayed, as all 12 notes are there, not just the standard tuning notes EADGBE. It takes any guesswork out of the process. The only downside to this kind of tuner is that it you won't be training your ear to really listen and zone in those frequencies. To do that, use our simple guitar tuner.