Noise

What it does

Seven synthesized sounds — white, pink, brown and deep noise plus rain, surf and wind — each one loop-matched with an equal-power seam, so there is no dip where it repeats, and level-matched to each other, so switching sounds does not jolt you awake. A night-safe UI that will not blind you at 3am, a sleep timer with gentle fade-out, and background playback. Everything works free, forever.

• Seven synthesized sounds — white, pink, brown, deep, rain, surf, wind — each loops seamlessly
• Pure-black night UI that won't blind you at 3am
• Sleep timer with a gentle 30-second fade
• Mix channels and save your own presets