White Noise
Constant power across all frequencies. Ideal for masking distracting speech.
FREQUENCY: HIGH
Timer
Pick a length, press start. Sound optional, and it stops when the countdown does.
25:00
Ready
Nothing selected
Sound Library
Calibrated frequencies for deep work and relaxation.
Color Noises
Continuous frequencies for auditory masking.
Brown Noise
Deep, bass-heavy rumble reminiscent of a distant waterfall or thunder.
FREQUENCY: LOW
Pink Noise
Balanced spectrum that sounds more natural to the human ear, like steady rain.
FREQUENCY: BALANCED
Red Noise
Even deeper than Brown noise, focusing heavily on the low-end spectrum.
FREQUENCY: LOW
Black Noise
Near-silence with subtle low-frequency drift. Meditative, like the sound of a quiet room at night.
FREQUENCY: NEAR SILENT
Grey Noise
Psychoacoustically equalized to sound equally loud at every frequency.
FREQUENCY: EQUALIZED
Ambient Sounds
Natural soundscapes recorded in high fidelity.
Rain
Gentle rainfall creating a natural, soothing atmosphere perfect for deep concentration.
SOURCE: RECORDED
Rain on Tent
Rainfall on a tent canvas — cozy, immersive and deeply relaxing for focused work.
SOURCE: RECORDED
Ocean Waves
Rhythmic ocean waves rolling onto shore — a timeless natural soundscape for calm focus.
SOURCE: RECORDED
Wind
Steady breeze flowing through open spaces — airy and expansive for clear thinking.
SOURCE: RECORDED
Forest Stream
A gentle brook flowing through a quiet forest — peaceful and grounding for deep work.
SOURCE: RECORDED
Meadow
Birds and insects in a sunlit meadow — warm, organic ambience for relaxed focus.
SOURCE: RECORDED
Binaural Beats
Brainwave entrainment through stereo frequency offset. Layers with any noise above.
Headphones required for binaural effect
Delta
Deep sleep and healing. Ultra-low 2 Hz beat for total relaxation.
BEAT: 2 Hz
Theta
Meditation and creativity. 6 Hz beat for deep introspection and flow.
BEAT: 6 Hz
Alpha
Calm focus and learning. 10 Hz beat for relaxed concentration.
BEAT: 10 Hz
Beta
Active thinking and energy. 14 Hz beat for alertness and problem solving.
BEAT: 14 Hz
How this timer works
Choose a preset and the countdown begins; the ring around the display fills as it runs, and the same number appears in the player bar so you can see it from anywhere in the app. If audio is playing, it stops when the timer reaches zero — a behaviour you can turn off in Settings if you would rather it continued.
Starting any sound also starts the timer automatically, which means the common case takes one click: pick a background, and the block is already running.
Every length, one page each
Each duration below opens the timer already set, so you can bookmark the one you use and skip the setup entirely.
- Breaks and short blocks: 5 minutes, 10 minutes, 15 minutes, 20 minutes
- Focus blocks: 25 minutes, 30 minutes, 45 minutes, 50 minutes
- Long sessions: 60 minutes, 1 hour, 2 hours
- By purpose: focus timer, study timer, work timer, exam timer
Unlimited mode
The ∞ preset counts up instead of down, which is the setting for open-ended sessions where you want to know how long you have been at it without a deadline hanging over the work. Nothing stops on its own in this mode.
For repeating cycles with breaks built in, the Pomodoro timer is the better tool — it handles four focus rounds, the breaks between them and the long break at the end, and switches the background sound at each phase change.
Common questions
Does the timer keep running in a background tab?
The countdown does. Audio may be suspended by the browser when a tab is not visible, especially on phones, so keep the tab in view if you want the sound to continue.
Can I run the timer with no sound?
Yes. The countdown and playback are independent — start the timer and leave the sound library alone.
What happens when it reaches zero?
Playback stops by default. You can disable that under Settings, and the Pomodoro timer plays a chime at each phase change if you want an audible signal.