Does exactly what I need – Perfect Tempo Review

I've got a lower voice than most of the artists whose songs I like. As a result, sometimes it's hard to sing along belt out the tunes, because there are parts I just can't hit. This app let's me easily drop the pitch to a key more manageable for me. Also changes tempo simply, but I haven't had need for that feature.
Review by Blademaster02 on Perfect Tempo.