Cyclic Sighing is a dedicated physiological sigh app for iPhone. It guides the physiological sigh — also called cyclic sighing — a double inhale through the nose followed by a long exhale through the mouth.
It is available free on the App Store for iPhone (iOS 16.6 or later), with a one-time $9.99 Pro unlock. No subscription, works fully offline, no account required.
The physiological sigh has a specific structure: a full first inhale through the nose, a shorter second top-off inhale, and then a long exhale through the mouth. Cyclic Sighing guides each phase distinctly, so the double inhale — the defining feature of the technique — is clear from the very first session.
Smooth animations and optional voice guidance for each inhale and the extended exhale. Subtle haptics for eyes-closed practice.
Calm, Relax, and Rest — each following the double-inhale, long-exhale structure at different pacing.
Pre- and post-session mood check-ins tied to every session. See if your breath and mood tend to move together over time.
Monthly calendar and yearly overview of mood patterns, filterable by feeling.
Daily streaks, session history, and breathing stats. Skip Day protects your streak on off days.
Time-based and location-based reminders to support a consistent daily habit.
Home Screen, Lock Screen, and Live Activity widgets for quick session access.
Optional Mindfulness minutes sync with Apple Health HealthKit.
Free to download. The free tier includes guided Calm sessions, mood journal, daily goal setting, time-based reminders, and offline use. A one-time $9.99 Pro purchase unlocks all patterns, custom timing, breathing stats, mood insights, Apple Health sync, widgets, location-based reminders, and Skip Day — permanently, with no recurring subscription.
No account required. No data collected. Cyclic Sighing works fully offline and all session and mood data stays on your device, with optional iCloud sync. Nothing is sold or shared.
Cyclic Sighing and the physiological sigh are intended for general wellness purposes only. They do not provide medical advice, diagnosis, or treatment. Consult your healthcare provider before starting any breathing practice if you have a health condition.
Cyclic Sighing — dedicated physiological sigh app for iPhone. Free to download, one-time $9.99 Pro, no subscription.
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