The science behind the room

Four findings, four design choices

How this is different from a playlist or a plain timer

A playlist ignores your work rhythm; a kitchen timer ignores your environment. Stillscape couples the two so that sound, light and the clock move together: the scene leans in during focus and exhales during a break, turning the loop into a conditioned cue your brain can settle into. It's free, requires no account, runs in the browser and works offline after the first visit — no subscription gating the research. See how it compares with I Miss My Cafe or browse the best focus timers with ambient sound.

What the evidence supports — and what is inference

To keep this page honest, the claims above sit on two different shelves.

• Directly studied: the vigilance-decrement result from Ariga & Lleras, the ~70 dB moderate-noise effect on creative tasks from Mehta, Zhu & Cheema, and the faster stress recovery with nature sounds versus traffic noise reported by Alvarsson and colleagues. The Pomodoro Technique itself is a practitioner method with a large following rather than a single tested protocol — its value rests on the soft-deadline and task-initiation logic described above.
• A theory, not a settled mechanism: Attention Restoration Theory supplies a coherent vocabulary (soft fascination versus directed attention), but like most frameworks in environmental psychology it is an interpretation of findings, not a law.
• Not tested at all: there is no head-to-head trial comparing Stillscape's rainy-cafe room against plain rain audio, a silence baseline or any other tool for focus outcomes. What the research supports is each ingredient in isolation, not this specific combination.

How sound masking actually works

Masking is easier to trust once you see the two moving parts. First, unpredictability is the problem, not loudness. Speech is the worst offender because your brain cannot stop parsing words, and an irregular sound — a door, a chair scrape, half a phone call — triggers an orienting response you didn't ask for. Second, a steady broadband floor shrinks the jumps. When the background is silent, every transient is a large relative change; when a consistent mix like rain plus cafe murmur is already present, the same transient is a much smaller change on top of the floor, and far less likely to pull you out of the task. This is the role the focus white-noise track plays in the mix: not stimulation, but a floor under the room.

Why the scene and the sound move together (a hypothesis)

Stillscape dims the room when a block starts and warms it when a break arrives, so light, sound and the clock change as one. A plausible mechanism is classical conditioning: a consistent sensory pairing repeated daily becomes a cue, the way a desk you only study at starts to feel like studying. But to be explicit — this is a design bet, not a studied claim. No published experiment has compared an audiovisual scene that shifts with the timer against audio alone. Many people report that the transition itself ("the room changed, so the mode changed") helps them switch states; treat that as anecdote until someone tests it.

The limits of this page

The studies cited used specific tasks, settings and populations — the ~70 dB finding concerns creative tasks, not all cognition, and a level that suits one person may irritate another; some people genuinely focus best in near-silence. Effect sizes in this literature are typically modest, and none of these findings constitute medical advice: Stillscape is not a treatment for ADHD or any attention disorder, however well its rhythm happens to suit some people who have one. The most honest test available to you is your own data — two weeks of sessions and minutes from the Pomodoro timer will say more about your focus than any citation on this page.

References

1. Cirillo, F. The Pomodoro Technique. See also: Pomodoro Technique overview.
2. Kaplan, R. & Kaplan, S. (1989). The Experience of Nature: A Psychological Perspective. Cambridge University Press — Attention Restoration Theory.
3. Mehta, R., Zhu, R. & Cheema, A. (2012). "Is Noise Always Bad? Exploring the Effects of Ambient Noise on Creative Cognition." Journal of Consumer Research, 39(4). doi:10.1086/665048.
4. Ariga, A. & Lleras, A. (2011). "Brief and rare mental 'breaks' keep you focused: Deactivation and reactivation of task goals preempt vigilance decrements." Cognition, 118(3), 439–443.
5. Alvarsson, O., Wiens, S. & Nilsson, M. (2010). "Stress recovery during exposure to nature sound and environmental noise." International Journal of Environmental Research and Public Health, 7(3), 1036–1046.

Sound perception is subjective and Stillscape makes no medical claims — but the design choices above follow published attention and environmental-psychology research rather than guesswork.