Atnight is described as 'Relax your mind and fall asleep fast using scientifically proven breathing techniques' and is an app in the Sport & Health category. There are more than 25 alternatives to Atnight for a variety of platforms, including iPhone, Android, Online / Web-based, iPad and Mac. The best alternative is Blanket, which is both free and Open Source. Other great apps like Atnight are Calm.com (Freemium), Noizio (Paid), Pzizz (Freemium) and Atmosphere: Relaxing sounds (Free).
ANoise is a minimal ambient noise player to help you focus on your productivity! Just open the Ubuntu sound indicator and choose your noise: Coffee Shop | Fire | Forest | Night | Rain | Sea | Storm | Wind