NoiseCheck Decibel Sound Meter

Measure sound levels, track noise exposure, and monitor your acoustic environment with NoiseCheck — the smart, clear, and privacy-first decibel (dB SPL) meter. Whether you are testing workplace noise, checking neighborhood sound levels, measuring concert volumes, or calibrating home audio systems, NoiseCheck gives you instant acoustic insights.

🔊 KEY FEATURES:
• Real-Time Decibel Meter: Sound pressure level (dB SPL) measurement using digital signal processing (DSP).
• Live Scrolling Audio Graph: Visualize sound frequency variations and acoustic trends in real time.
• Essential Metrics: Instantly view Minimum, Maximum (Peak), and Average sound levels.
• Noise Exposure Guide: Built-in daily noise threshold indicators and exposure awareness guidelines.
• Microphone Calibration: Fine-tune readings with custom decibel offsets (+/- 20 dB) to match your phone's microphone with reference sound meters.
• Session History & Playback: Save your measurements, label locations (Home, Office, Traffic, Industrial, Concert), and review historical logs.
• 100% Offline Capability: Measure sound anywhere, anytime without an internet connection.

🔒 ZERO-AUDIO PRIVACY COMMITMENT:
Your privacy is our highest priority. NoiseCheck processes audio signals entirely in volatile device memory (RAM) to calculate decibels. We DO NOT record, store, compress, or transmit your voice or microphone audio to any server.

📊 DECIBEL REFERENCE GUIDE:
• 30 dB: Quiet library, whisper
• 60 dB: Normal conversation, background music
• 75–80 dB: Heavy city traffic, vacuum cleaner
• 85 dB: Lawn mower, blender (Exposure guide: 8 hours/day)
• 95 dB: Motorcycle, power drill (Exposure guide: 45 minutes/day)
• 105 dB: Sporting event, rock concert (Exposure guide: 4 minutes/day)
• 120+ dB: Jet takeoff, siren at 1m (High noise level)

⚠️ DISCLAIMER:
NoiseCheck is an informational noise-monitoring and acoustic estimation tool. It is not a certified Class 1 or Class 2 sound level meter (IEC 61672-1) or a medical hearing diagnostic instrument. Smartphone microphones vary by manufacturer; manual calibration is recommended for high-precision environments.

Download NoiseCheck today and take control of your acoustic environment!