Your pocket of calm. Mask noise, breathe steady, measure loudness — through any earphones, headset, or Bluetooth. Works offline.
🌊Mask
🫁Breathe
📊Measure
Pick your shield
🌊Browndeep · masking & sleep
🌧️Pinkbalanced · focus & study
⚙️Whitebright · blocks chatter
Silent. Tap start, then put your earphones in.
Volume 60%
Sleep timer
∞30 min60 min2 hrs4 hrs
Stops automatically after 60 min
Noise Guard masks outside noise with a steady sound — earmuffs made of sound. It is not hardware ANC; that needs chips inside the earphone. Keep volume below 70% to protect your hearing.
Technique
Box 4-4-4-4Calm 5-54-7-8 sleepCustom
Steady and strong — the focus classic used by athletes and Navy SEALs.
Breathe in: 4s
Hold: 4s
Breathe out: 6s
Ready
0cycles0:00time
Follow the circle. In through the nose, out slow through the mouth.
Slow breathing settles your nervous system in under a minute. 4-7-8 is best lying down before sleep; Box is best at your desk.
— dB
Tap start and let the mic listen.
0 quiet60 conversation85 risk120
Now
—
Average
—
Peak
—
Microphone stays on this device — nothing is recorded or sent anywhere.
Readings are approximate — phone mics are not lab instruments. Guide: 30-40 quiet room · 60-70 conversation · 80+ traffic/generator · above 85 sustained, protect your ears.