FingersTune is a virtual musical instrument. It is designed as an Ocarina. It has four buttons. When you click on different buttons in different combinations, You get different tones. Plus it can sound not only as Ocarina voice, but as any instrument from a large voices library. As Piano, Saxophone, Accordion, Violin, Piccolo, Guitar, or even as a Woman Scream.
Also FingersTune has an embedded Editor. You can use it to compose a melody. And use the composed melody to learn it in Traning Mode. There are also Accordion, Piano, Saxophone and Ocarina Free Lite versions of FingersTune available on App Store. Also a Free Mac version is also available on FingersTune.com website.