Cardiac Coherence Breathing

VASTFLOW

In-app purchases

About this app

Cadyne is a cardiac coherence breathing companion. Breathe at a calm, steady pace, follow a smooth on-screen guide, and keep a simple record of your practice - all in one fast, private app with no account required.

THE 365 METHOD

The classic cardiac coherence rhythm: 3 sessions a day, 6 breaths a minute, for about 5 minutes. Cadyne paces every inhale and exhale with a soft visual guide and optional audio cues, so you can keep your eyes closed and just follow the sound.

GUIDED BREATHING PATTERNS

Cardiac coherence, box breathing, 4-7-8, and resonance breathing are all built in. Pick a breathing pattern, set the length, and start - the pacing engine keeps perfect time, so you never have to watch a clock. Paced breathing has never been simpler.

SCREEN-OFF AUDIO

Audio guidance continues when your screen is off, so a breathing session keeps pacing in your pocket or on the nightstand. Choose calm cue tones or quiet soundscapes.

YOUR HRV TREND

Cadyne reads your heart rate variability (HRV) from Google Fit / Health Connect and shows your own trend next to your practice days - a read-only view of your data, not a measurement or a diagnosis.

PRACTICE LOG AND STREAKS

Every completed breathing session is logged. See your days at a glance, build a streak, and watch your cardiac coherence practice add up over weeks.

PROTOCOL EDITOR

Build your own breathing patterns. Set inhale, hold, exhale, and pause to the second, name it, and save it next to the presets.

PRIVATE BY DESIGN

There is no account and no server. Your practice log stays on your device, and Cadyne uses no analytics or tracking SDKs.

NOT MEDICAL ADVICE

Cadyne is a breathing-practice timer and a personal record. It does not provide medical advice, diagnosis, or treatment, and it is not a substitute for a qualified professional. Always follow the guidance of a licensed professional.

Find your calm, one breath at a time, with Cadyne.

Privacy: https://vastflow.kz/privacy/
Terms: https://vastflow.kz/terms/

What’s new

First release. Guided cardiac coherence breathing - the 365 method, box breathing, 4-7-8 and resonance, with screen-off audio, an HRV trend and a private practice log.