YOU MUST TUNE YOUR UKULELE.
This is a great FREE App to have - it will tune Guitars, Ukulele & Bass
ANDROID LINK HERE
APPLE LINK HERE
Great Tuner and Songbook - you can play along as it shows you the chords.
ANDROID LINK
APPLE LINK
Similar to Kala app - more user friendly.
Great App by the "Ukulele Teacher"