Soothr is an ambient noise application for Windows Phone 7, and costs $2.99 in the Marketplace. Ambient noise applications simply play soothing sounds like delicate wind chimes and soft acoustic guitar melodies to help let your mind rest at ease.
When you buy Soothr, the application gives you access to downloading a number of different sounds from the appâ€™s online collection. Then, you can play those sounds from your device and even combine multiple sounds to create your own mix. You can even play your own music over the ambient sounds, and playing audio with the screen off works fine. The app also has a timer feature (with presets of 5, 10, 30, and 60 minutes), and a visualization feature where you can view a cycling color gradient or a slideshow of your own pictures. Finally, you can set alarms that will trigger your mixes at whatever time you want.
Overall, Soothr looks really great. The collection of sounds appears to be constantly growing (with the last sounds added on 12/5/2010). If the app fits your lifestyle, find it in the Marketplace for $2.99