Halcyon is a deep-work timer that guards your attention from the inside out. Silence the pings, set an intention, and let the quiet do the heavy lifting.
The focused folks at
No streak guilt, no gamified noise. Just the conditions deep work actually needs.
Halcyon mutes notifications and greys out the apps you flagged as black holes — automatically, the moment a session starts.
Every block opens with one prompt: what are you here to do? Name it once, and stay anchored to it until the timer ends.
Work and rest intervals tune themselves to how your week actually goes, instead of forcing a rigid 25/5 on every brain.
Setup takes under a minute. The hard part — sitting down — is still on you.
Type what this block is for. One sentence is plenty — it becomes your north star on the timer screen.
Halcyon clears the runway: notifications off, tempting tabs dimmed, a calm screen counting down.
End each block with a 10-second reflection. Halcyon learns your patterns and protects them next time.
No credit card to begin. Cancel in two clicks, no guilt-trip retention screens.
Everything one focused person needs to get going.
For builders who live or die by their deep-work hours.
Shared focus norms for a whole crew.
Give it the room it needs. Start your first Halcyon session in the next sixty seconds.
Start free — no card needed