The jangly, chiming sound of acoustic and electric 12-string guitars have played a crucial role in popular music, from blues to rock, pop to folk. 12-string guitars feature six pairs of strings, known ...

I've been trying to get back into playing guitar and I've noticed one thing: Both the App Store and Google Play are replete with guitar-tuning apps that are full of either upsells or advertisements.

Justin Pot is a freelance journalist who helps people get more out of technology. If you'd rather not use this automated tuning, or find that it doesn't quite work, you can tap a string to tune it ...