When you are trying to find the top vocal training software you should do an online search for vocal training software reviews.  This will give you actual ratings from other people who used the software.  There are several different vocal training program to choose from.  If you find a programs that has one of the highest ratings from users you can be assured that you will also get a lot from the program.  If you find that the online reviews help you to select a good program, be sure to add your opinion to the review after you make a purchase.  This way you can pass on the good news.