
Focus arcs, not playlists
Each session builds for 12 minutes, holds for 20 and eases out over 8, so the end of a block feels natural.
Generative soundscapes tuned to your heart rate and calendar. Forty-minute focus arcs, wind-down sessions at night and no ads, ever.


Each session builds for 12 minutes, holds for 20 and eases out over 8, so the end of a block feels natural.
A meeting in 25 minutes? Halcyra shortens the arc and fades out two minutes before you need to talk.
Paired with your watch, tempo drops 4 bpm at a time when your pulse runs high during a session.
After 22:00 every soundscape loses its high end and drifts toward brown noise over thirty minutes.
Soundscapes are generated on device. Flights, trains and cabins in the woods all work.
Hours in deep work, longest unbroken block and the times of day you actually concentrate best.
“I stopped picking music to work to. I press one button, and forty minutes later I look up and the page is written.”
Three soundscapes and the basic focus timer.
Every soundscape, every arc, every device.
Quiet hours for a whole studio or office.
Seven days of Halcyra Plus, no card needed. Most people know by day three.