Calma: Sleep Sound Mixer

Most sleep apps hand you a playlist. Calma hands you a mixer.

Layer steady rain over deep brown noise, drop a ceiling fan underneath, set the
volume of every layer separately, and fall asleep to a sound that is actually
yours. Then save it and start the same thing tomorrow with one tap.

WHY CALMA IS DIFFERENT

• A real mixer — up to 6 layers at once, each with its own volume slider.
• One-time purchase. No subscription, no renewals, no "trial ending" emails.
• Fully offline. Every sound ships inside the app: no streaming, no data use,
works in airplane mode.

193 SOUNDS
White, pink and brown noise. Steady rain, heavy rainstorms and distant thunder.
Ocean, forest streams and wind through trees. Campfires and fireplaces. Ceiling
fans, washing machines, hair dryers and vacuum hum. Trains, ticking clocks and
quiet rooms. Crickets, birds and night breeze. Soft piano and tuning
frequencies (174, 396, 432 and 528 Hz).

A TIMER THAT DOESN'T WAKE YOU
Set it and forget it. Calma fades the whole mix down gradually instead of
cutting the sound off, so the silence arrives before you notice it.

BRAINWAVE LAB
Binaural beats running alongside the mixer — move the slider to pick your
frequency and layer it under rain or noise. Smart Descent walks the beat down
to 2 Hz (Delta) over 20 minutes for a hands-off transition into sleep.
Headphones recommended.

BREATHE FIRST
A two-minute breathing animation, including 4-7-8, to slow your body down
before the mix even starts.

FOR BABIES AND TODDLERS
White noise, womb sounds, heartbeat, lullaby music box, hair dryer, washer and
calm car-ride hum, all in one category.

FREE AND PRO
Free, with no time limit: 55 sounds, 3 layers at once, 5 saved mixes, the sleep
timer and the breathing exercise.
PRO unlocks all 193 sounds, 6 simultaneous layers, 25 saved mixes, Smart
Descent and the full Brainwave Lab range — for a single payment, forever.

Sleep well.