I use Relax Melodies. There is a free version. As Ive been using it for 8 months I finally paid for the full version think it was 3 bucks lol.
To clarify, it has a menu of different sounds you can use to make up your white noise, including plain old white noise, vacuum cleaner, dryer, womb, heartbeat, and my baby's favourite which is music box. You can play a combo of 10 sounds. I also play birds and water for us to sleep to at night.
Edited by Jillian_10, 18 November 2012 - 06:20 PM.