For absolute beginners, the visual system is genius. If the dial is red, stop turning. If it hits the center and turns green, you’re a rockstar. It removes the fear of breaking a string or getting lost in the noise. Here is where Guitar Tuna surprised me. It isn't just for standard EADGBE tuning.
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If you’ve been living under a rock (or strictly playing acoustic folk in a cabin without Wi-Fi), Guitar Tuna is the ubiquitous mobile tuner with the bright, rainbow-colored pegs. It has over 100 million downloads, which makes it the heavyweight champion of tuning apps. Guitar Tuna