myNoise

What it does

Every generator — rain, a distant thunderstorm, a Japanese garden, a cafe, a fan — is a ten-band equaliser over calibrated recordings, so you can push the frequencies that mask whatever is distracting you and drop the ones that irritate. There are animation modes that make the sound drift instead of loop audibly. It was built by a scientist as a tinnitus and concentration aid, and the calibration explanation is worth reading once.

Best for

• Masking an open-plan office
• Concentrating with tinnitus

Where it stops