I got PitchLab first, but then started using Eva instead. All I can say is use it as much as you can without straining yourself. The more you do it the less slips you have. My pitch also seems to slowly increase as I do that. I'm not in the female range yet, but I tried to use my guy voice on purpose this afternoon and I couldn't figure out how to get there. It also wasn't anywhere near as deep as it used to be. But I was at the dentist a couple weeks ago telling them about my name change and I sounded like my father. Get back in the car and start talking to myself and hear the perfect female voice. /sigh
