A free program for Android, by Fender Digital LLC.

Fender® Tuner for Guitar is a free and trusted app for musicians of all levels. The app is designed to work with your instrument to help you tune it to its perfect pitch. The app is used by musicians to tune their guitar, bass, ukulele, and other stringed instruments.

Fender Tuner for Guitar is an extremely simple tool that works with an auto-tune or manual-tune mode. The app works by listening to the sound of your instrument to find the pitch. You can also select from a range of preset tunings, including standard (EADGBE), open-g (Drop D), open-d (Drop C), and chromatic (Matte).

You can also use this app for practice. It features customizable drum beats that you can play along with, a metronome that can guide your timing, and more.