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Free breathing & binaural beats appBreathe Into Calm

Smiraj is a free, science-based calm app that runs in your browser: guided slow breathing, binaural beats, nature sounds and heart-rate biofeedback with your phone camera. No sign-up, no download, and nothing from your camera leaves your device.

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Smiraj

How Smiraj works

Smiraj uses a combination of guided breathing, ambient sound, and binaural tones to give the nervous system a rhythm it can follow. Instead of trying to force yourself into calm, the app guides you into a slower pattern of breathing and listening that signals to the body that it can begin to slow down.

Binaural tones are created when each ear hears a slightly different tone. The brain perceives the difference between those two tones as a third, internal rhythm. For example, if one ear hears 200 Hz and the other hears 210 Hz, the brain may perceive a 10 Hz rhythm, a frequency associated with a calmer alpha state.

The idea is not that sound “switches off” stress, but that together with the breath, it creates a stable sensory frame in which the body can more easily move from tension into a state of calmer presence.

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Choose the state you want to enter

Relief
Cyclic sighing: two inhales through the nose, then a long, slow exhale. Five minutes a day lifted mood more than mindfulness meditation in a Stanford trial.4
Relax
Slow guided breathing with a 6 Hz theta binaural layer, inspired by an EEG study linked to a meditative state and lower tension.9
Sleep
A slower breathing pace and a dynamic 0–3 Hz delta binaural layer, based on a sleep-lab study on shorter time to fall asleep.8
Focus
Coherent breathing with a 40 Hz gamma binaural layer over soft white noise, following a study that showed improved overall attention.10
Find your own breathing rhythm ↓
Duration

Headphones recommended for binaural audio. The breathing practice works without them.

Resonance

Find your breathing rhythm

Your pulse and blood pressure form a loop with its own rhythm, about one wave every ten seconds. Breathe at exactly that pace and each breath adds to the wave instead of working against it, so the pulse rises and falls the most. The pace differs from person to person, usually between 4.5 and 7 breaths a minute.3,19

The test takes about 9 minutes with a fingertip on your phone's camera. The pacer slows down little by little while we look for the pace where your pulse wave is biggest and cleanest. Measure again now and then: the rhythm can shift.20

“A stout steel bar may be set in vibration by drops of water falling upon it at proper intervals.”
Nikola Tesla, 1891
Training

Listen to your heart

Many anxious people misread their body's signals: a pounding heart feels like danger. In a randomised trial, six sessions of heartbeat-counting training with feedback reduced anxiety, and the effect still held three months later.11

With your eyes closed you count the heartbeats you feel, without touching your pulse. The camera measures how many there really were. Over the sessions, your sense of your own body gets more accurate.

Science

How Smiraj helps the nervous system settle

Smiraj is a relaxation aid, not a medical treatment. It was created from research showing that the nervous system does not respond only to thought, but also to rhythm: breath, sound, repetition, and tempo.

That is why the app combines guided breathing, longer exhales, ambient sound, and binaural tones. The goal is not to “switch off” stress, but to offer the body a stable pattern it can follow when the mind feels overloaded.

The strongest scientific support is behind slow, paced breathing. Binaural audio is used as an additional sensory layer that may help attention connect to a calmer rhythm and gradually move from tension into a state of quieter presence.

Slow breathing is the main mechanism

Research on slow-paced breathing shows that breathing near 6 cycles per minute can influence heart-rate variability, vagal activity, and parasympathetic regulation. That is why the breathing circle carries the experience. It gives the body a visible rhythm to follow when the mind is too busy to “just relax.”1,2,3

Longer exhales help the body downshift

Some breathing studies suggest that exhale-focused practices can reduce physiological arousal and improve mood. In Smiraj, the slower modes use longer exhales because they give the body a clear signal to soften, slow down, and leave the high-alert state more gradually. If you feel dizzy, the app switches to a lighter rhythm: in panic research, slow and shallow breathing helps more than deep breaths.4,15

Binaural audio as a rhythm cue

Binaural tones occur when each ear receives a slightly different tone, creating the perception of a third rhythmic pulse. Some studies and meta-analyses suggest potential benefits for anxiety, relaxation, pain perception, and attention, but the evidence is mixed and depends on frequency, duration, context, and the person listening. Smiraj uses binaural audio carefully, as a supportive cue, not as a claim that sound can instantly rewire the brain.5,6,7,8,9,10

Ambient sound reduces friction

A warm ambient layer helps mask distraction and gives attention something gentle to rest on. It works even without headphones. The goal is not to overwhelm the senses, but to create a quiet container where breathing, rhythm, and sound can work together.

You see your own heart

In HRV biofeedback people watch their heart rate rise on the inhale and fall on the exhale, and learn to make that wave larger. A meta-analysis found a large reduction in stress and anxiety. Smiraj reads your pulse from a fingertip on the camera, entirely in your browser.12

Checking that you really breathe slowly

Breathwork helps, but people asked to breathe 6 times a minute often breathe twice as fast without noticing. With the phone resting on your belly, Smiraj feels each breath and tells you whether you're following the rhythm.16

Learning to read your body

Anxiety often comes with misreading the body's signals. Heartbeat-counting training with feedback reduced anxiety in a randomised trial, with the effect holding at three months. That's the Listen to your heart training.11

Name it, then reframe it

Naming a feeling in one word dampens the brain's alarm response. And a racing heart read as preparation instead of danger leads to a healthier stress response. Both take seconds, so they're part of every check-in.13,14

Not medical advice. Smiraj is a self-regulation and relaxation aid, not a diagnosis, treatment, or replacement for professional care. If you have a heart condition, epilepsy, severe or persistent anxiety, panic attacks, trauma symptoms, or any medical concern, speak with a qualified professional. Do not use while driving or operating machinery. Pulse and breathing readings from a phone are approximate, not medical measurements, and do not replace an ECG.

FAQ

Questions about Smiraj

Is Smiraj really free?

Yes. Smiraj is completely free, with no account, no ads and no paid tier. It runs in your browser on a phone, tablet or computer, so there is nothing to download or install.

Do I need headphones?

Only for the binaural beats. Binaural beats need a different tone in each ear, so they work through headphones, not speakers. The guided breathing, nature sounds and pulse measurement work without headphones.

Do binaural beats actually work?

The evidence is mixed. Some studies and meta-analyses report small benefits for anxiety, relaxation and attention, while others find little effect. Slow, paced breathing has much stronger support, so in Smiraj the breathing carries the practice and binaural beats are a supporting sound layer.

What breathing rate is best for calming down?

For most adults, about 6 breaths per minute with a longer exhale. That pace is close to the body's own heart-rate rhythm, which makes the pulse rise and fall the most. Your personal resonance rate is usually between 4.5 and 7 breaths a minute, and Smiraj can measure it.

How does the resonance breathing test work?

You rest a fingertip on your phone's camera for about 9 minutes while the breathing pacer slows from 6.5 to 4.5 breaths a minute. The camera reads your pulse, and Smiraj finds the pace where your pulse wave is biggest and cleanest. Later sessions can then use your own rhythm.

Is my camera data stored or sent anywhere?

No. The camera image is processed only in your browser to read your pulse. Nothing from the camera is recorded or uploaded. Smiraj uses Google Analytics to count visits, and sends the rating you leave after a session only if you choose to.

Can Smiraj help with anxiety, panic attacks or insomnia?

It can help you relax and wind down, but it is not a treatment. Smiraj is a self-regulation aid, not medical care. If you live with severe or persistent anxiety, panic attacks, insomnia, a heart condition or epilepsy, talk to a qualified professional.

About the project

How Smiraj was created

Miloš Ludus

My name is Miloš Ludus. I am a designer, creative programmer, and AI educator. My work focuses on connecting technology, creativity, and practical systems that help people turn ideas into real projects faster.

Smiraj started as my experiment in combining scientific research, design, and artificial intelligence into a simple digital experience. I wanted to take principles from breathing, sound, and nervous system regulation and turn them into an app anyone can use instantly, without sign-up or friction.

A major inspiration was an idea often attributed to Nikola Tesla: that the world can be understood more deeply through energy, frequency, and vibration. Smiraj is not an attempt to present that idea mystically, but practically and responsibly: through research on breathing, sound frequencies, and the way the nervous system responds to repetition, tempo, and carefully shaped audio.

I built the entire app through a process I call vibe coding: a way of working where AI tools help you gradually turn an idea into a functional digital product. This approach does not require advanced technical knowledge. It requires a clear idea, the right way of thinking, and the ability to guide AI through design, structure, copy, functionality, and development.

This is exactly what I teach inside LudusVibe, my educational platform for building real projects with AI. It is designed for people who are not necessarily programmers, but who want to learn how to create web apps, tools, and digital products by using AI as a collaborator, not as a replacement for their own thinking.

Learn more about LudusVibe
Sources

The scientific studies Smiraj was built on