Decibel Pro - dB Sound Meter

Decibel Pro is your high-precision digital sound level meter engineered to measure sound pressure levels (dB SPL), analyze frequency spectrums in real time, and protect your hearing health following international WHO, OSHA, and NIOSH safety standards. Whether you need to monitor noise levels at home or in the workplace, calibrate audio and acoustic equipment, check soundproofing, or safeguard your ears at concerts, Decibel Pro delivers professional laboratory acoustic tools straight to your iPhone. KEY FEATURES: • Real-Time dB SPL Meter: Instantaneous decibel readings with Min, Avg, and Max indicators. • FFT Spectrum Analyzer: Live real-time acoustic frequency spectrum with clear bass, mid, and treble frequency identification. • Noise Dosimeter & Exposure Safety: Visual risk gauges and maximum daily noise exposure limits (OSHA & NIOSH standards). • Acoustic Frequency Weighting: Full support for A-Weighting (dBA) and C-Weighting (dBC). • Precision Manual Calibration: Fine-tune calibration offset (±20 dB) to match certified external sound meters. • Session History & Logs: Record measurement sessions with timestamp, duration, and telemetry charts. • CSV Report Export: Export and share comprehensive acoustic session reports. • OLED Dark Theme: Ultra-high contrast interface engineered for low battery consumption and low-light environments. 100% ON-DEVICE PRIVACY: Your privacy is our utmost priority. Microphone data is processed entirely in volatile memory (RAM) in real time. No voice recordings or audio streams are ever stored, eavesdropped, or transmitted to any server. ACOUSTIC DISCLAIMER: While Decibel Pro is calibrated for iPhone microphones, mobile devices cannot replace Class 1 / Class 2 certified sound level meters for legal and occupational compliance audits. Privacy Policy URL: https://chisel-hawthorn-89d.notion.site/Privacy-Policy-for-Smart-Cleaner-Phone-Storage-3c5ab807cbbd80148e99e75076b570b5 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/