Design Sprint Timer
A minimalist, keyboard-first countdown timer for design sprints, workshops, and any room that runs on timeboxes. Free, no account, nothing to install — it runs in the browser at dstimer.app.
why a dedicated timer
Design sprints live and die by the timebox. Lightning demos get ten minutes, sketching gets twenty, a crazy-8s round gets exactly eight — and the facilitator sets, starts, and adjusts those windows dozens of times a day, usually mid-sentence, while everyone watches a projected screen.
Most online timers are built for one person at a desk: small digits, buttons to click, ads in the margins. This one is built for the room. The digits fill the screen and read from the back row. Every control is a key, so setting five minutes never means finding a button. State is color, not chrome: the screen drains as time passes, turns red in the final stretch, and holds red when time is up — so even someone who looks up late knows exactly where things stand.
the keyboard
spacestart, pause, resume — or restart a finished timer
Rreset to the last duration; again to clear
↑ ↓adjust the focused unit
← →move between hours, minutes, seconds
⌥ 1–6presets, +5 minutes to +1 hour (Alt on Windows)
⌥ Ssettings — sounds, colors, warning window
⌥ Pfloat a mini timer above other windows (Chromium & Safari)
⌥ Dlight / dark theme
small things that matter mid-session
The timer survives a reload without losing its place. The screen stays awake while it runs. The tab title counts down, and gains a ⏱ when the warning window opens, so a hidden tab still warns you. A soft tick marks the final five seconds; a chime marks the end — both optional, volume yours. A started timer locks its duration until you reset it, so a stray keypress can't quietly change the exercise.
open the timer · set a time · press space