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 learn it in Traning Mode.
The Lite Saxophone version does not have Editor, and is able to voice only as a Saxophone.