Which breathing patterns are built into this timer?

The pacer includes Box Breathing (4-4-4-4 seconds), 4-7-8 relaxation breathing, Coherent 5-5 breathing, and Physiological Sigh.

Does the breathing pacer track or upload my session history?

No. Audio cues are synthesized in your browser using Web Audio, and preferences and session logs are stored only in localStorage.

Breathing Exercises

Visual breath pacer for Box (4-4-4-4), 4-7-8, Coherent (5-5), and Physiological Sigh.

Equal-ratio breathing to steady focus and even out stress.

Box Breathing

Ready

02:00

16s cycle · 4-4-4-4

Breathe through your nose. Keep both holds soft without locking your throat.

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Today's log 0

Completed breathing sessions appear here. Stored locally in your browser.

Space Start / Pause R Reset 1–4 Technique Z Zen M Sound

Supported breathing patterns

Pick a timed session (2m, 5m, 10m, or custom 1–60 minutes) or an Open session and follow the expanding visual orb with optional synthesized Web Audio phase cues.

Box Breathing (4-4-4-4): Balanced 16-second cycles: 4s inhale, 4s hold, 4s exhale, 4s hold. Press 1 to select.
4-7-8 Breathing: 19-second calming cadence: 4s inhale, 7s hold, 8s exhale. Press 2 to select.
Coherent Breathing (5-5): Smooth 10-second rhythm (six breaths per minute) with equal 5s inhale and 5s exhale phases. Press 3 to select.
Physiological Sigh (2+1-6): 2s inhale plus 1s top-up inhale, followed by a 6s exhale to help settle stress. Press 4 to select.