What does ReaTune do as opposed to this program?
It does what you need, it tells you the pitch of the sound you provide. And it writes that to a MIDI track if you want. You sing a note in the microphone and it tells you what note that is. You can sing the whole song and have ReaTune convert it to a MIDI track for editing. Or you can have the plugin translate and audio track (isolated vocals, in example) to MIDI.
You are about to leave Rhythm Gaming World and access the external songs DB. While no song or file sold for commercially available videogames is hosted there and only fan generated content is allowed, Rhythm Gaming World has no direct control over the database and no files are hosted here. Alright, we had to made you aware of this, now you can visit the database!