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Traditional Eastern Breathwork · iOS & Chrome Extension 鶴·息

Crane: Breathing & Meditation v1.0.5

Master your breath. Quiet the internal storm.

An intelligent breathing sanctuary crafted with traditional Eastern minimalism and modern neurobiology. Regulate autonomic tone, stabilize heart rate variability, and slide into deep stillness with circadian wisdom, eyes-closed haptics, and ceramic soundscapes.

Download for iOS Add to Chrome Included in Rendom Plus

PhilosophySong Dynasty Zen

Architecture100% Offline Sanctuary

TactilityEyes-Closed Haptics

ChronobiologyCircadian Rhythm Sync

Eastern Design System · 陶木意境

Ink, ceramic, and tactile serenity.

Restrained ceramic cards, brush stroke aesthetics, and deep OLED black tones engineered to protect your attention from screen fatigue and dopamine loops.

Chronobiology · 子午流注

Breathing attuned to solar and biological cycles.

Human physiology follows an unbroken natural rhythm between morning cortisol surges and nighttime melatonin release. Crane harmonizes your practice with the hour of the day.

06:00 – 11:00

Morning Awakening · 晨练

Awaken pulmonary capacity, gently elevate oxygen saturation, and cultivate crisp clarity without abrupt nervous system spikes.

11:00 – 16:00

Midday Coherence · 正午

Equalize CO₂ and oxygen ratios to dissolve afternoon cognitive lethargy and restore centered deep focus.

16:00 – 21:00

Dusk Decompression · 薄暮

Downregulate sympathetic arousal with extended exhalations to transition mindfully out of the workday.

21:00 – 06:00

Deep Sleep · 夜阑

Stimulate vagal tone and decelerate resting heart rate with classical sedative pacing for tranquil sleep onset.

Physiological Protocols · 气之妙义

Clinically validated respiratory mechanics.

Every pattern in Crane unites classical mindfulness wisdom with modern neurobiology. Precise mathematical ratios of inhalation, retention, and extended exhalation that physically regulate your heart and mind.

Physiological Sigh

· 生理叹息

Rapid autonomic reset to release acute physical tension and restore immediate internal calm.

Acute Reset

Box Breathing

· 方形调息

Equal-cadence rhythm designed to clarify the mind, steady the pulse, and sustain deep composure under pressure.

Composure & Focus

4-7-8 Rhythm

· 宁神助眠

Extended calming exhalations that soothe the nervous system and gently guide you into deep restorative sleep.

Sleep Onset

Coherent Resonance

· 心律共振

Harmonious breathing that aligns respiratory flow with heart rate variability to foster long-term emotional resilience.

Cardiovascular Balance

Energize

· 风箱回气

Diaphragmatic activation to banish mental sluggishness, oxygenate the body, and awaken natural morning vitality.

Natural Alertness

Sensory Environments · 空灵声境

Acoustic landscapes & tactile haptics.

Practice with closed eyes. Spatial 3D soundscapes recorded in mountain temples, bamboo groves, and crackling tea hearths paired with subtle motor vibrations to pace your breath without illuminated screens.

Rain on Clay Tile · 夜雨Acoustic rain resonance

Campfire Ember · 炭火Warm low hearth crackle

Ocean Swell · 沧海Rhythmic tidal rhythm

Mountain Crickets · 秋虫High-frequency night calm

Deep Bamboo Pine · 松风Ancient forest canopy

Monastery Bell · 禅钟Harmonic bronze decay

Crane Spaces & Soundscapes on iPhone 16 Pro

Craft & Discipline · 守静致远

Built with restraint and reverence.

We reject manipulative gamification, notification nagging, and cloud surveillance for personal mindfulness.

I. Offline Sanctuary

100% Local Execution

Crane functions entirely without an internet connection. Take your sanctuary onto airplanes, remote mountain trails, or underground transit without friction.

II. Absolute Privacy

Zero Telemetry

No account creation required to sit and breathe. Your session history, streaks, and preferences remain sealed locally on your device.

III. Mindful Ergonomics

Tactile Eyes-Closed Focus

Low-power acoustic rendering, soothing dark mode textures, and subtle haptics allow you to rest your eyes rather than staring at bright glass.

Clarifications · 答疑解惑

Frequently asked questions.

Essential details regarding Crane access, platforms, and physiological foundations.

Is Crane included with my Rendom Plus subscription?

Yes. A single Rendom Plus subscription provides complete, unrestricted access to the entire 3-in-1 suite: Meomni Workspace, Gmail Cleaner, and Crane. All premium soundscapes, circadian schedules, and future feature drops are fully included.

Can I use Crane completely offline without an internet connection?

Absolutely. Crane is engineered offline-first. All soundscapes, breathing paces, haptic configurations, and Lotus milestone tracking run locally on your device without requiring network pings or server verification.

How do the Circadian Smart Sessions work?

Crane reads your device’s local solar time and automatically surfaces the physiologically optimal practice for that time window — energetic diaphragmatic volume for morning, coherent focus for afternoon work blocks, stress dump for dusk, and vagal down-regulation for deep sleep.

What makes Crane different from conventional meditation apps?

Most meditation applications rely on long, rambling voice recordings that demand continuous visual and auditory attention. Crane is grounded in respiratory physiology: structured breath ratios that physically alter your autonomic state in minutes, paired with eyes-closed haptic rhythms and zero tracking.

Which platforms are supported?

Crane is built for modern iOS devices (iPhone and iPad) and Android devices, featuring full tactile vibration engine integration and background audio support.

Unified Productivity & Mindfulness