Azora is a breathwork companion that uses your phone's camera to measure heart rate in real time, guides you through evidence-based breathing techniques, and reveals patterns in your stress and recovery.

How does heart-rate tracking work?

Through photoplethysmography (PPG), Azora reads your pulse via the camera and flash during a session. No wearables, no straps — just place your finger over the lens and watch your live BPM, stress index, and recovery metrics unfold.

Is Azora free to use?

Azora is free to download, with core breathing exercises and basic tracking available at no cost. Advanced analytics, personalized programs, and unlimited history are part of Azora Premium.

What devices support Azora?

Azora is available on iPhone. For the richest experience, we recommend devices with a rear camera and flash.

Is my health data private?

Your physiological data never leaves your device unless you choose to enable cloud sync. We do not sell, share, or monetize your health information in any form.

What is box breathing?

Box breathing is a technique where you inhale, hold, exhale, and hold again — each for an equal count, usually four seconds. The four equal phases form the four sides of a 'box.' It's used by Navy SEALs, athletes, and clinicians to calm the nervous system under pressure.

How long should I practice box breathing?

Even 1–2 minutes (about 4–8 rounds) can lower your heart rate and ease stress. For a deeper reset, practice for 5 minutes. Many people use it before sleep, before a stressful event, or to break a spiral of anxious thoughts.

Does box breathing actually work?

Slow, paced breathing at around 6 breaths per minute increases vagal tone and shifts you toward parasympathetic ('rest and digest') activity. Box breathing's extended holds and even rhythm are a simple, repeatable way to get there.

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Free breathing tool

Box Breathing

The 4-4-4-4 technique used by Navy SEALs to stay calm under pressure. Inhale for 4, hold for 4, exhale for 4, hold for 4. Follow the pacer below — no signup, no app needed.

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0 rounds completed

Why box breathing works

Slowing your breath to roughly six cycles a minute increases vagal tone and nudges your body out of fight-or-flight and into “rest and digest.” The equal holds in box breathing make the rhythm easy to keep, so your heart rate and stress response settle within a few rounds. It’s grounded in the same camera-based photoplethysmography (PPG) research that powers Azora.

Want to see it working on your heart?

Azora guides this exercise and measures your real heart rate through your iPhone camera — so you can watch your BPM settle and track your recovery over time.

Common questions

What is box breathing?: Box breathing is a technique where you inhale, hold, exhale, and hold again — each for an equal count, usually four seconds. The four equal phases form the four sides of a 'box.' It's used by Navy SEALs, athletes, and clinicians to calm the nervous system under pressure.
How long should I practice box breathing?: Even 1–2 minutes (about 4–8 rounds) can lower your heart rate and ease stress. For a deeper reset, practice for 5 minutes. Many people use it before sleep, before a stressful event, or to break a spiral of anxious thoughts.
Does box breathing actually work?: Slow, paced breathing at around 6 breaths per minute increases vagal tone and shifts you toward parasympathetic ('rest and digest') activity. Box breathing's extended holds and even rhythm are a simple, repeatable way to get there.
How is this different from the Azora app?: This browser tool guides the rhythm. The Azora app does that and measures your real heart rate through your iPhone camera, so you can watch your BPM settle in real time and track how your recovery improves over weeks.