Caliber dB: Sound Level Meter

Professional sound analyser in your pocket. Measure decibels and noise levels accurately.

Caliber dB is a professional-grade high-precision sound level meter (SPL) for acoustic consultants, safety professionals, and health-conscious users. Transform your smartphone into a noise analysis lab with on-device sound classification and compliance reporting.

Monitor industrial noise for OSHA compliance, analyse room acoustics, or document neighbour noise for legal purposes with the accuracy you need.

KEY FEATURES:

• REAL-TIME PRECISION: High-accuracy dB with A/C/Z weighting and Fast/Slow response.
• ON-DEVICE SOUND CLASSIFICATION: Identifies 18+ categories locally on your device. Audio is not uploaded to any cloud AI service.
• PROFESSIONAL COMPLIANCE: OSHA, NIOSH, WHO, and international environmental standards.
• DETAILED REPORTS: Localised PDF, JSON, and CSV exports.
• NEIGHBOUR NOISE MODE: Community complaint logging with limit analysis and location tags.
• SMART CALIBRATION: Advanced 3-step hardware-specific calibration.
• OPTIONAL AD-FREE SUBSCRIPTION: The full app is free with occasional ads. An optional In-App Purchase subscription removes ads only — no features are locked behind payment.

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