Shizumori: White Noise Sleep

100+ calming sounds for sleep, focus, babies and tinnitus masking — and they never stop during calls, videos or games.

Shizumori is a calm, dark, beautifully simple sound app for sleep, focus, relaxation, soothing a baby, and masking tinnitus.

Mix over 100 high-quality soundscapes across 15 categories — rain, ocean, fire, wind, water, white/brown/pink noise, fans, clocks, nature and more — into your own perfect blend. Save your mixes, set a sleep timer, and drift off.

WHY SHIZUMORI • 100+ sounds, 15 categories — layer any of them into custom mixes • Never stops — your sound keeps playing during calls, videos and games • Tinnitus tone & filter — find your personal frequency and shape a notch filter that sits alongside your ringing instead of clashing with it • Calming breathing exercises paired with sound • One-tap ready mixes for sleep, focus, babies and calm • Sleep timer with a gentle fade-out • Beautiful, dark, distraction-free design

FOR EVERY MOMENT • Sleep — soften the room and fall asleep faster • Babies — gentle white noise and womb-like textures to settle little ones • Focus — steady background sound to block out distractions • Tinnitus — broadband masking sounds that help the ringing fade into the background • Calm — unwind anytime, anywhere

Shizumori is a relaxation and sound-masking tool. It does not diagnose, treat, or cure any condition.

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