Decibel Meter x Sound dB Level

Decibel Meter: Sound Level & Noise Detector

Professional Sound Meter & Noise Dosimeter for iPhone.

Turn your device into a precision sound level meter (SPL meter). Trusted by safety officers, acoustic engineers, and thousands of users, Decibel Meter delivers lab-quality noise monitoring with an elegant, intuitive interface.

Whether you are checking noise levels for OSHA workplace compliance, recording evidence for noise complaints, or analyzing audio frequencies, this is your all-in-one pocket tool.

=== KEY FEATURES ===

PROFESSIONAL NOISE DOSIMETER
• OSHA & NIOSH Standards: Accurately track daily noise exposure dose.
• Hearing Safety: Monitor TWA (Time Weighted Average) to prevent hearing loss.
• Real-Time Analysis: Instant, high-precision dB(A), dB(C), and dB(Z) measurements.

VIDEO & EVIDENCE RECORDING
• Video Overlay: Record video with real-time decibel levels embedded—perfect proof for noisy neighbors or construction sites.
• Photo Snapshots: Capture measurement screens with timestamp, location, and max dB tags.
• GPS Tagging: Automatically map your noise measurements to specific locations.

ADVANCED ANALYSIS & REPORTING
• Spectrum Analyzer (RTA): Visualize sound frequencies (FFT) to identify annoying noise sources.
• PDF Export: Generate professional reports with charts, statistics, and exposure data in seconds.
• History Log: Save unlimited session data for long-term environmental monitoring.

POWERFUL TOOLS
• Calibration: Fine-tune microphone sensitivity for professional-grade accuracy.
• Background Mode: Continue measuring and logging data even when the app is closed.
• Multiple Views: Switch between Waveform, Digital, Analog Gauge, and Spectrum views.
• Reference Chart: Compare current noise levels with real-world examples (e.g., "Subway Train," "Whisper").

Download Decibel Meter today and measure the world around you with precision!

=== Subscription options ===
The app is free to download, but to access premium features, a subscription is required. With the subscription, you'll enjoy uninterrupted access to our premium features. Your subscription will automatically renew at the end of each term, and your credit card will be charged through your iTunes account within 24 hours before the end of the current period.

If you wish to cancel the automatic renewal of your subscription, you can do so at any time by access