which is where the Guitar Tuna app can come in handy. This one allows you to tune your guitar as well as bass, banjo, mandolin, ukulele, and other stringed instruments. Customers are in for professional tools as this one has been created by guitarists so they know exactly what users are...
and typing in “tuna” to find it with Spotlight is part of my guitar ritual. If it’s not already part of yours, it should be. The app is free for iPhone and iPad and super intuitive. It will try to sell you a subscription