How to sound and sing better without lessons?

I can rap good but I can't sing well I have this Iphone or Ipod app smule I just got yesterday but I suck so how do I make myself better? For free kik darksenses99

To be honest singing need lot of patient and practice before you can really sing with confidence.
So please don't expect it overnight change.keep doing some good breathing, vocal exercising and most important do not limit yourself to just one style, keep experimenting with different styles.

I'm repeating be patient and keep practicing you will see its working after sometime…