Kolys37

It's a guitar (and ukulele) tuner. Whether you need a reference tone, a chromatic tuner, or to tune to a standard or common tuning for the instrument, this app gets it done. Nice UI, very intuitive. The only reason I'm giving it four stars rather than five is that if it could also handle bass, mandolin, banjo, bouzouki and other stringed instruments in the same way as it handles guitar and uke - or if it allowed me to create a custom tuning of my own in order to mock up the mandolin or banjo - it would fit my needs perfectly. UPDATE: since my initial review, 12-string guitar and 4- and 5-str