Decibel Meter: Noise Detector

Measure ambient sound in real time, record detailed sessions, mix 16 calming soundscapes, and run privacy-friendly device checks—all in one app.

Understand the sound around you with a clear, real-time decibel meter.

Decibel Meter turns your iPhone or iPad into a practical sound-level companion. View the current reading, minimum, average, maximum, range, live trend, and noise category at a glance.

MEASURE AND UNDERSTAND SOUND • Monitor ambient sound levels in real time • See current, minimum, average, maximum, and range values • Follow an 18-second live analyzer and session duration • Compare readings with a built-in noise level guide • Calibrate from -20 to +20 dB against a trusted reference

RECORD YOUR MEASUREMENTS • Record measurement sessions with their timeline and statistics • Review saved sessions whenever you need them • Delete saved measurements easily • Keep measurement data stored locally on your device

RELAX, FOCUS, OR SLEEP • Mix 16 procedural soundscapes, including rain, ocean waves, forest, white noise, pink noise, brown noise, fan, birds, stream, wind, thunder, campfire, crickets, clock, piano, and meditation • Adjust each sound independently • Save favorite mixes as presets • Set a sleep timer and receive a local notification when playback ends • Continue soundscape playback in the background

CHECK YOUR DEVICE • Test the microphone and speaker • Review battery, storage, display, connectivity, audio routes, and available sensors

PRIVATE BY DESIGN Microphone audio is analyzed on your device. The app does not upload your listening session. Recording a measurement saves sound-level data and statistics—not microphone audio.

IMPORTANT Phone microphones are not certified sound-level meters, and readings may vary by device. Calibrate against a trusted instrument when accuracy matters. This app is intended as a practical reference tool and is not a substitute for certified equipment or professional hearing-safety advice.

PREMIUM FEATURES — SEPARATE PURCHASE REQUIRED • Unlimited measurement recording requires a Premium subscription • Removing advertisements requires a Premium subscription

Privacy Policy: https://nhantran2112.github.io/decibel-meter-sound-detector/privacy-policy.html Terms of Use: https://nhantran2112.github.io/decibel-meter-sound-detector/terms-of-use.html