Sleep sounds for iPhone

Sleep better.
Pay once.

Color noise, binaural beats, nature sounds, and a smart alarm that actually works — all for a one-time purchase. No subscription. No recurring charges. Ever.

Base app
$3.99
one-time
Complete
$17.99
includes Premium
Compare
Calm: $70/yr
BetterSleep: $60/yr
Download on the App Store Learn more
No subscription. Ever.
Pay once. Own it forever.
White · Pink · Brown · Blue · Violet noise
Binaural beats & isochronic tones
Sleep Journey — full night frequency arc
Two-layer alarm system
Built for tinnitus · ADHD · insomnia
No subscription. Ever.
Pay once. Own it forever.
White · Pink · Brown · Blue · Violet noise
Binaural beats & isochronic tones
Sleep Journey — full night frequency arc
Two-layer alarm system
Built for tinnitus · ADHD · insomnia

What Noctua does

Everything you need
for a better night's sleep.

Five color noises
White, pink, brown, blue, and violet noise — each targeting a different part of the frequency spectrum. Brown noise for ADHD focus. Blue and violet for tinnitus masking. Pink for deep sleep.
Sleep Journey
An automated frequency arc that guides you from alpha wind-down through theta, into delta deep sleep, then rises gently before your alarm — timing the wake phase to the lightest part of your cycle.
Two-layer alarm
Noctua's alarm runs inside the app and as a system alarm simultaneously. If one fails, the other fires. Named profiles let shift workers and irregular schedules set it and forget it.
Binaural beats
Use headphones for true binaural beats, or play isochronic tones through speakers. A frequency slider targets delta, theta, and alpha ranges. The Learn section explains the science honestly.
Nature sounds
Rain, ocean, forest, thunder, fireplace and more — layerable with noise and tones. Each sound has individual volume controls so you can mix exactly the environment you need.
Sleep science built in
A dedicated Learn section explains auditory masking, color noise research, binaural beats, and frequency zones — citing real studies, acknowledging what varies by person.

Premium feature

Sleep Journey

Most sleep apps play a sound and leave you to figure the rest out. Sleep Journey is a full-night program — it moves through the frequencies your brain naturally visits during sleep, automatically.

No manual intervention. Set it when you go to bed. It handles the night.

1
Wind down
Alpha (8–13 Hz) — calm wakefulness, transitioning to drowsy
1–15 min
2
Fall asleep
Theta (4 Hz) — matches light sleep stage 1, holds through sleep onset
45 min
3
Deep sleep
Delta (1–3 Hz) — slow-wave sleep, physical restoration
Until alarm
4
Gentle wake
Ascending back toward alpha — arrive at your alarm in lighter sleep
20 min
Alpha · Wind down Theta · Fall asleep Delta · Deep sleep Gentle wake 13 Hz 8 Hz 4 Hz 1 Hz

Sound library

Every color of noise.
Honestly explained.

White
All frequencies equal. Best for masking unpredictable noise.
Pink
Warmer than white. Linked to slow-wave sleep enhancement.
Brown
Deep rumble. Strong community evidence for ADHD focus & calm.
Blue
High-frequency emphasis. Effective for tinnitus masking.
Violet
Maximum high-frequency. Best for high-pitched tinnitus.

Plus layerable nature sounds — rain, ocean, forest, thunder, fireplace, and more.

An honest word about what sound can do.

A 2021 meta-analysis of 38 studies found white noise significantly reduced sleep onset time. The Northwestern 2017 pink noise study linked rhythmic delivery to slow-wave sleep enhancement. Brown noise has strong community evidence for focus and calm — particularly among people with ADHD — though formal research is still developing.

Binaural beats can influence brainwave activity toward the beat frequency. The effect requires headphones and results vary between individuals. Noctua's Learn section cites the actual studies and explains what varies by person.

Sound is a complement to good sleep hygiene, not a replacement for medical care. Noctua doesn't promise specific outcomes — it's built for you to discover what works for you.

Pricing

No subscription.
No exceptions.

Calm charges $70 a year. BetterSleep charges $60. Sleep Cycle charges $30. Noctua costs less than a single month of any of them — and you own it forever.

Base App
$3.99
one-time purchase
  • White, pink, brown, blue, violet noise
  • Nature sound library
  • Two-layer alarm system
  • Named alarm profiles
  • Sleep science Learn section
Premium Upgrade
+$14.00
one-time — $17.99 complete
  • Everything in Base
  • Sleep Journey — full-night frequency arc
  • Binaural beats & isochronic tones
  • Frequency slider (delta · theta · alpha)
  • Sleep tracking
No subscription. No monthly fee. No yearly renewal. You pay once and Noctua is yours.

Early listeners

What people are saying.

★★★★★
"Finally an app that doesn't ask for my credit card every year. The brown noise alone is worth it."
— r/ADHD user
★★★★★
"I have tinnitus and blue noise is the first thing in years that makes it bearable to fall asleep."
— App Store review
★★★★★
"The Sleep Journey feature is the most thoughtful thing I've seen in a sleep app. And I've tried all of them."
— Beta tester

Available on the App Store

One purchase.
Better nights.

No subscription. No free trial that expires. Just Noctua — yours forever.

Download on the App Store