The beat is mixed into the audio itself. Works through any speaker.
No headphones required. The beat is created in the audio signal before it reaches your ears. Learn more ↓
Background Mix
4 Sound Mix
Sound Mix
Layer ambient sound under your tone. Volumes start low by default so they don't overpower the beat.
Music
Explore the full sound library
Noise, nature, ASMR and ambient sounds. Mix and save your own.
Monaural beats work by combining two slightly different frequencies, say 200 Hz and 210 Hz, into a single audio signal before it's played, rather than sending one frequency to each ear. The two waves interfere with each other directly, producing a real, physically measurable pulsing in amplitude at the difference frequency (10 Hz here).
Because that pulsing already exists in the waveform itself, monaural beats don't depend on stereo separation the way binaural beats do. They come through cleanly on a single phone speaker, a mono earbud, or a smart speaker. Isochronic tones take this a step further with sharper, fully-gated pulses rather than a smooth interference pattern.
Research on brainwave entrainment shows modest, inconsistent effects. Some people notice clear benefits for relaxation and focus; others notice little. Treat it as one tool among many, not a guaranteed fix. If you have epilepsy or a seizure disorder, consult your doctor before use.
No headphones, no problem
If binaural beats have never quite worked for you because you're rarely wearing headphones, this is the version built for that, just as effective straight out of a phone or laptop speaker.
A pulse you can actually hear
The beat is genuinely there in the sound itself rather than assembled by your brain, which is why some people find it easier to notice and settle into.
The same goals, a different route
Whatever you're after, sleep, focus, calm, it maps to the same targets as binaural beats. Pick by what you want to feel, the delivery method is the only thing that changes.
Worth knowing before you dive in
It works well for some people and barely at all for others, so treat it as one relaxation tool among several. Check with a doctor first if you have epilepsy or a seizure disorder.
Some of the carrier tones in our monaural presets, mainly the ones in the Emotional and Spiritual categories, sit on a specific set of frequencies you may recognize from other wellness apps: 396, 417, 528, 639, 741, 852 and 963 Hz. These are known as the Solfeggio frequencies, and each one traditionally carries its own intention, 528 Hz for transformation, 396 Hz for releasing fear, and so on.
The specific healing claims attached to them go further than the evidence actually supports, and the scale's history is closer to a modern reinterpretation than a verified ancient tuning. None of that makes them unpleasant to listen to, though. We include these frequencies because they're a familiar, well-liked set of tones that a lot of people already find calming, and that's reason enough to have them here, whatever you make of the rest.
396Hz
Ut
417Hz
Re
528Hz
Mi
639Hz
Fa
741Hz
Sol
852Hz
La
963Hz
Extended tone
Read the research
Brainwave Entrainment articles, plain-language guides to what actually helps