Testing methodology

These tools were tested first-hand by the developer on the hardware below. We publish this so you can judge how well results apply to your own device.

Devices tested

What we checked

• Tones play at the stated frequency and stop cleanly with no clicks.
• Left/right panning routes to the correct channel on stereo output.
• Timers end sessions at the selected duration.
• No microphone permission is ever requested by the cleaning and test tools.

Reference baseline and limits

Browser-based measurements use uncalibrated consumer hardware. Speaker, DAC and operating-system processing differ by device, so output level and frequency response are not lab-accurate. Results are a practical check, not a certified measurement.

We do not claim a specific amount of water removed. Sound vibration helps with loose surface water and light dust only.

Found an inaccuracy?

Report it via the contact page. Include your device, browser and what you observed.