Noise Detector: dB Sound Meter2.5.5 - Google Play

Noise Detector turns your phone into a sound level meter, a simple noise meter and dB meter for everyday use. Measure the noise around you in decibels and see how loud your home, office, street or workplace really is.

✅ MEASURE
- Live decibel reading (dB meter), updated continuously
- Minimum, average and maximum dB while you measure
- Analogue dial or scrolling line graph, whichever you prefer
- Colour bands show when a level crosses from safe into harmful

✅ RECORD AND REPLAY
- Tap record to capture a stretch of measurement — a few seconds or several hours
- Name it, save it, and open it later from Saved Recordings
- Replay runs the same dial and graph, with min, average and maximum for that stretch
- Delete any recording when you no longer need it

✅ UNDERSTAND
- Built-in decibel reference chart, from a whisper at 20 dB to a jet engine at 150 dB
- What each range means for your hearing, and how long exposure is safe
- See where your daily noise exposure actually comes from

✅ USE IT FOR
- Checking noise from neighbours, traffic, air conditioning or machinery
- Finding a quiet room to work, study or sleep in
- Saving how loud a workshop, gym, restaurant or classroom got, and comparing later
- Teaching sound, acoustics and hearing safety

✅ SIMPLE BY DESIGN
- One tap to start measuring, one tap to record a stretch
- Light and dark themes, following your system setting
- No account and no sign-up
- Works offline

🔊 WHAT IS SAVED STAYS ON YOUR PHONE
A recording is the dB readings from that stretch — the numbers that drive the dial and the graph — stored privately on the device. Microphone audio is not written to a file, not played back, and not uploaded. You can delete a recording at any time from Saved Recordings.

🔎 Important Note:
This app is intended as an auxiliary tool. Phone microphones are typically calibrated for human voice frequencies, which may affect dB accuracy. For professional results, we recommend using a certified sound level meter.