Pure Tone Pomodoro

Standard 25/5 focus cycles utilizing a non-intrusive 440Hz sine wave alert.

JavaScript Required: This acoustic tool relies on the Web Audio API and requires JavaScript to function.

25:00

Focus (25m) Break (5m)

Acoustic Design

Unlike jarring alarms, this tool uses the Web Audio API to synthesize a pure 440Hz sine wave (A4). The tone fades in over 50ms to prevent clicking and provides a clean, clinical alert that your cycle has ended.