Halcyon: Deep sleep sounds

Halcyon helps you fall asleep, relax, and focus with soothing sounds you can mix your own way — plus guided wind-downs, narrated sleep stories, and breathing exercises to quiet a busy mind.

MIX YOUR PERFECT SOUND Layer any of 19 high-quality sounds and set each one's volume to build the exact soundscape you like. Rain over a distant campfire. Ocean waves under soft wind. A fan with gentle night crickets. Save your favorite mixes and bring them back with one tap.

• Nature — rain, wind, campfire, night, storm, forest birds • Water — ocean waves, stream, waterfall • Noise — white, pink, and brown noise • Comfort & ambience — fan, café, train, heartbeat • Frequencies — delta, theta, and alpha tones (headphones recommended)

GUIDED SLEEP & CALM • 10 sleep and relaxation guides — wind down, body scan, letting go, and more • 5 original sleep stories written to drift you off, narrated in a choice of calm, natural voices • Box, 4-7-8, and coherent breathing exercises to slow your breath and settle your mind

BUILT FOR SLEEP • Sleep timer that fades gently to silence — it won't jolt you awake • Background playback keeps sounds going with the screen off • Lock-screen and Control Center controls • A calm, dark interface designed for the end of the day • Adaptive soundscapes that softly drift over time so the sound never feels static

HALCYON PREMIUM Unlock the full experience with a subscription: • All 19 sounds, with unlimited layers in a single mix • Save as many mixes as you like • All 10 sleep guides and all 5 sleep stories • Read-aloud narration in a choice of four calm, natural voices • Adaptive soundscapes across the whole library

Start with a 7-day free trial on the annual plan. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends; manage or cancel anytime in your App Store settings. Payment is charged to your Apple ID. Any unused portion of a free trial is forfeited when you buy a subscription.

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Sweet dreams.