White Noise & Fan: Just Noise

Just Noise is a free sleep and focus sound app that generates white, soft white, pink, brown, deep brown, ocean, wind, and fan sounds live on your device. Because the sounds are synthesized in real time rather than looped recordings, playback has no seams or repeats and requires no downloads.

Tune sound characteristics such as tone, depth, wave speed, gusts, and pitch, then mix multiple sounds at individual volumes. Use sleep timers with gentle fade-out, Lock Screen and Control Center controls, quick actions, and light or dark appearance options. Just Noise has no ads, subscriptions, accounts, or data collection.