Drone Tuner is a unique app designed to improve your sense of pitch and your sound. It features beautiful drone performances from professional orchestral musicians, as well as a gorgeous and revolutionary visualization that allows you to visualize your place within a chord! This tuner has the following unique features: 1. It has recordings from professional musicians playing long tones List of instrument sounds: Alto Sax Bass Clarinet Bassoon Cello Clarinet English Horn Flute French Horn Guitar Oboe Piano Tenor Sax Trombone Trumpet Tuba Upright Bass Ukelele Viola Violin 2. It incorporates a revolutionary visualization that allows you to simultaneously work on your tuning AND your sound quality. With this visual aid you can also tune yourself within a chord! 3. Drone tuner is the fastest digital tuner for iOS. Instead of detecting your pitch, it uses incoming sound to produce an interference pattern that indicates your harmonic relation to the selected root note in real time. The result is faster and more accurate than other digital tuner. You will see, and feel the difference. For more information, please visit our website! www.drone-tuner.com