Zone out and relax to the sounds of rain and thunder after a long day with Thunderspace ($1). This iOS app features true-to-life audio recordings of real thunderstorms, all in stereoscopic 3D sound — so it sounds like you're actually listening to a storm outside. The app also features realistic lightning flashes synced with the audio. It comes with two thunderstorms (roof garden and waterscape), and six additional thunderstorms are available as in-app purchases. Each storm recording loops seamlessly and lasts a while, perfect for falling asleep to, tuning out noisy neighbors, or for long commutes.