White Noise+ Relaxing Sounds 4+ Create Natural Soundscapes Temp Free Was £2.99

A very highly rated app.

White Noise+ is a better way to create the perfect ambient sounds for relaxing, meditation and sleeping.

"Provides a nearly infinite amount of Variety" -LifeHacker.com

How to use:

Simply drag a sound icon into the smart grid to begin. Drag icon to the left or right to change the sound complexity and drag up or down to change it's prominence in the mix. Save current mix or load a preset anytime in the preset panel.

Features:

80 distinct sounds

Plays in the background

iOS10 Widget for quick play

Dark mode

Apple Watch support

iPad split screen multitasking

Set an alarm or sleep timer

Quick access to airplay