dB Meter: Sound Level

dB Meter turns your iPhone into a fast, beautiful, and accurate sound-level meter. Measure the noise around you in real time — at home, at work, at a concert, or anywhere you want to protect your hearing.

Pay once. No ads, no subscriptions, no tracking.

LIVE MEASUREMENT
• Real-time decibel readings on a precise speedometer-style gauge
• A-weighting (dBA) and Fast/Slow response, like professional meters
• Min, average, max and a rolling 60-second graph
• Live sound recognition — know what you're hearing (speech, music, traffic…)

PRO TOOLS
• Octave-band analyzer (1/1 and 1/3 octave RTA) with peak-hold
• Guided calibration wizard for accurate readings on your device
• Smart Monitor for long sessions with loud-environment alerts
• Export a professional PDF report, or CSV data

PROTECT YOUR HEARING
• Clear noise categories from Very Quiet to Dangerously Loud
• Instant warning when levels become risky (around 85 dB)
• Daily noise-exposure dose based on the NIOSH 85 dB / 8-hour limit
• Trends & Insights — weekly averages plus your loudest times and places

RECORD, TRACK & SHARE
• Save measurements and review them with charts and a personal noise map
• Tag measurements with your location (optional)
• Share a gorgeous measurement card

EVERYWHERE YOU NEED IT
• Home & Lock Screen widgets, including a Daily Dose widget
• Live Activity in the Dynamic Island while measuring
• A companion Apple Watch app to measure right from your wrist
• Beautifully optimized for iPad, in portrait and landscape
• Available in 30+ languages

PRIVATE BY DESIGN
• Audio is never recorded or stored — only the loudness is analyzed, instantly
• Your measurements stay on your device
• No ads, no analytics, no third-party tracking

dB Meter provides approximate readings for everyday awareness and is not a certified measurement instrument.