Noise Detector: dB Sound Meter

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.