All tools
14 tools
Focus & productivity
Timers and drills for getting into, and staying in, deep work.
Measure your visual reaction speed in milliseconds and track your average and personal best.
Zen Pomodoro Timer25-minute focus intervals with soft acoustic chimes to structure deep work and prevent burnout.
Schulte Table TrainerFind numbers 1–25 in order to train visual scanning, focus and peripheral awareness.
Calm & relax
Short resets for stress, racing thoughts and tension.
Box, 4-7-8 and 5-5 breathing guided by a smooth expanding orb.
5-4-3-2-1 GroundingA guided sensory reset that brings your attention back to the present moment.
Thought ShredderType the worry that keeps looping, shred it and let it dissolve. Private and instant.
Stress Relief TasksA short checklist of tiny physical resets you can do at your desk in two minutes.
Relaxing Sounds & Binaural BeatsMix rain, ocean, chimes and a 10 Hz binaural tone, synthesized live in your browser.
Games & fidget
Low-pressure play for restless hands and quick breaks.
Brain training
Classic cognitive tests. Check your score, then try to beat it.
Simple routines to start with
Not sure where to begin? Chain two or three tools into a habit that takes minutes.
Scores, streaks and volume settings are stored only in your browser.
Open a page and start. Every tool runs in the browser you already have.
Most tools take one to five minutes, so they fit between meetings.
Touch-friendly controls and a light or dark theme on any screen size.
Frequently asked questions
What is the average human reaction time on a visual test?
The standard visual reaction time for healthy adults averages around 200ms to 270ms. Audio reaction speeds are usually faster (140–160ms), whereas touch responses average 150ms.
What is the Pomodoro Technique?
The Pomodoro Technique is a time management method using timed intervals—typically 25 minutes of deep focus followed by a 5-minute break—to sustain concentration and prevent mental fatigue.
Are my scores and sound settings saved privacy-first?
Yes. Reaction records, high scores and sound volume preferences are stored only on your device using HTML5 localStorage. No personal data is transmitted anywhere.
How frequently should I practice breathing or focus exercises?
Practicing 3–5 minutes of guided box breathing or Schulte grid training once or twice a day is a reasonable routine for focus and stress management.
Is Calm & Focus free, and do I need an account?
It is completely free. There is no sign-up, login or app download; every tool runs in your browser.
Does it work on my phone?
Yes. The site is built mobile-first, with touch-friendly controls that adapt to any screen size, in dark or light mode.