Focus & Cycle Timer (Pomodoro / HIIT)

Human concentration is not infinite. To sustain high performance, you need structured breaks. This tool is an advanced interval timer specifically designed for alternating between Focus (Work) and Rest (Break) sessions. Use it on your phone or desktop for free.

Scientifically Proven Presets

We've included presets based on productivity science and sports physiology:

Pomodoro Technique (25 + 5)

The world-famous method: 25 minutes of focus followed by a 5-minute break. Prevents burnout and keeps your brain fresh.

52/17 Rule (52 + 17)

Often cited as the "Golden Ratio" for desk work productivity. Ideal for longer deep-work sessions.

Ultradian Rhythm (90 + 20)

Matches the natural biological cycles of human energy. Best for creative tasks that require "Flow state."

HIIT / Tabata (20s + 10s)

High-Intensity Interval Training. 20 seconds of intense exercise followed by 10 seconds of rest. Perfect for quick home workouts.

Immersive Features

• Background Ambience: Automatically switch audio environments—play "Rain Sounds" during focus time and "Lofi Beats" during breaks to trigger your brain's mode switching.
• Visual Cues: The entire screen color changes between intervals, so you know exactly what to do without reading the text.