What are some alternatives?
When comparing Studiowave and Calmy Leon, you can also consider the following products
Noisli - Noisli is a fantastic background noise and color generator for working and relaxing. Online soothing ambient sounds like White noise, Rain and Coffee Shop.
Noizio - Feeling that the noise of the big city is too much for you to bear?
Aura Soundscape Player - Modern tools for modern applications.
Hipster Sound - Be productive at home with the sounds of busy cafes.
SoundDrown - Ambient sounds to help you focus, relax, and escape
Moszen - Moszen is a free web service that provides ambient sounds from natural environments to help you relax and avoid stress in your daily life.