Caliber dB: Sound Level Meter

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 AI classification and compliance reporting.

Monitor industrial noise for OSHA compliance, analyze room acoustics, or document neighbor 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.
- AI AUDIO CLASSIFICATION: Identifies 18+ sound categories including speech, traffic, and machinery.
- PROFESSIONAL COMPLIANCE: OSHA, NIOSH, WHO, and international environmental standards.
- DETAILED REPORTS: Localized PDF, JSON, and CSV exports.
- NEIGHBOR NOISE MODE: Community complaint logging with limit analysis and location tags.
- SMART CALIBRATION: Advanced 3-step hardware-specific calibration.
- AD-SUPPORTED / PREMIUM: Core features with occasional ads; Premium removes ads and unlocks Pro tools.

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