HomeAppsMusic & AudioGuitar Open Tuning ReferenceApps like Guitar Open Tuning Reference Here are some great alternatives to Guitar Open Tuning Reference by Jean-Philippe Glomot : Guitar Tuner: Pro Tuning App ★4.6 Guitar Fretboard: Scales ★4.9 Acoustic Guitar Tuner ★3.8 Harmonic Tuner Guitar Setup ★5.0 Tune Your Guitar ★4.7 Guitarist's Reference Pro ★3.3 Guitar Tuner App ★4.3 Bass Guitar Tunings ★3.7 Coach Guitar Tuner Full Chord ★3.7 Guitar Tuner ★4.4 Guitar Tuner - Simple Tuners ★4.4 Guitar Tuner ★4.0 Guitar Fretboard Trainer ★4.7 Guitar Note Trainer ★4.6 Guitar Note Trainer Demo ★3.5 Guitar Tuner, GuitarTunio ★4.1