Highly recommend
The sounds are high quality. The mixer function allows you to combine 3 sounds and adjust each ones volume, allowing for the perfect blend. The mixes can be saved for later. The base noises are good, but I did purchase a package of 250 sounds for $10 and it was well worth it. I find falling asleep with this app much easier than others I have tried.
VicsWords about
Sleep Sounds by Sleep Pillow, v7.4