
Essential Breathing
A minimal breathing timer for calm pauses
What it does
Essential Breathing is a tiny open-source breathing app for simple, quiet pauses. It shows a smooth visual inhale/exhale rhythm, lets you adjust breath and session duration, and works directly in the browser as a lightweight PWA. No account, no clutter, no coaching noise — just a calm timer to help you slow down for a few minutes.
Does the same job
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- BCBreathe CLI – Paced resonance breathing in the macOS terminalMay 2026 · github.com · ▲132
I built a terminal app that paces slow breathing at 6 breaths per minute for vagal tone training. It's a single Python file, stdlib only, no dependencies — just run breathe and follow the bar. I'm a cardiology patient (HFrEF). Slow breathing at resonance frequency is one of the few non-pharmacological interventions shown to improve cardiac vagal tone and baroreflex sensitivity (Bernardi et al., Circulation 2002; Lancet 1998). I wanted a frictionless daily habit tool — no app store, no account, no subscription, just open terminal and go. Design constraints, all grounded in the clinical…
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