Sleep sounds app with brown noise, white noise, pink noise, and rain sounds to help you sleep better, focus, and relax. Download the best sleep sounds and noise app today.

Premium Sleep Sounds

Experience scientifically proven audio for better sleep. Slo offers brown noise for deep focus, white noise to block distractions, pink noise for restful sleep, and nature sounds like rain and ocean waves.

Key Features

• Brown noise - Deep, rich tones for concentration and sleep

• White noise - Mask background noise and distractions

• Pink noise - Gentle frequencies for deeper sleep

• Rain sounds - Natural rainfall and thunderstorms

• Ocean waves, waterfalls, and nature sounds

• Timer and mix multiple sounds

• Offline playback - no internet needed

Benefits

Sleep Better: Fall asleep faster with soothing sleep sounds designed for bedtime. Improve sleep quality naturally.

Boost Focus: Block distractions with brown noise and white noise. Perfect for studying, working, or reading.

Reduce Stress: Calm your mind with relaxing nature sounds. Lower anxiety and promote relaxation.

Aid Meditation: Enhance mindfulness with ambient sounds that help you stay present.

Why Choose Slo?

The #1 sleep sounds app trusted by millions. High-quality audio, simple interface, and proven results. Free to download with premium sounds available.

Download Slo now and experience better sleep tonight.

FREQUENTLY ASKED QUESTIONS

What is the best app for brown noise?

Slo generates continuous, high-quality brown noise specifically tuned for deep sleep and focus. Unlike looped recordings, Slo creates endless unique audio that never repeats.

Does brown noise actually help you sleep?

Yes. Studies show brown noise reduces the time to fall asleep and masks disruptive sounds like traffic, snoring, and noisy neighbors. Slo's deep-frequency brown noise is especially effective for light sleepers.

What's the difference between brown noise, white noise, and pink noise?

White noise contains all frequencies equally (like static). Pink noise emphasizes lower frequencies (like steady rain). Brown noise goes even deeper - like a rumbling waterfall or strong wind. Slo offers all three so you can find what works best for you.

Can I use it for studying and focus?

Absolutely. Many users prefer brown noise for deep work, studying, and ADHD focus. Slo's continuous playback helps maintain concentration for hours.

Does it work offline?

Yes. All sounds in Slo are generated on-device and work without an internet connection - perfect for flights, camping, or areas with no signal.

Is Slo free?

Slo offers free sounds with a timer. Premium unlocks the full sound library, mixing, and unlimited playback.

Can I mix multiple sounds together?

Yes. Slo lets you layer sounds - combine brown noise with rain, add thunder to white noise, or create your own custom soundscape with adjustable volumes.

Does Slo have a sleep timer?

Yes. Set a timer to automatically stop playback after you fall asleep - 15 minutes, 30 minutes, 1 hour, or custom duration.

Is brown noise better than white noise for babies?

Many parents find brown noise more soothing for babies because of its deeper, gentler frequency. Slo offers both so you can test which helps your baby sleep best.