*** FREE for Limited Time Only The 1st Apple Watch + iPhone Chromatic Tuner that detects and displays your tuning accurately and precisely . It's FREE. Quick and Easy to use. Clear and Simple to read. Custom tuning notes specifically for string instruments like Guitar, Ukulele, Violin, Viola, Cello. Features (Apple Watch + iPhone): - detects your tuning notes - generates tones - precise frequencies detection in hertz Download now and to make your Watch and iPhone a chromatic tuner!