Guitar Tuner² is especially designed and optimized to work with all types of six string acoustic and electric guitars. It’s highly accurate and really easy to use， you won’t need anything else to have your guitar perfectly tuned before each performance.
*40 alternative tunings that you can experiment with
*adjustable A4 frequency (from 410Hz to 450Hz)
*solfège or scientific notation
*flat or sharp notation
*universal app， works both on iPad and iPhone