HearGuard: Decibel Meter dB

Measure the noise around you in real time and protect your ears. Instant dB readings, loudness zones, hearing checks & history — your pocket sound level monitor.

HearGuard measures sound levels in real-time with professional-grade accuracy. Monitor noise exposure, protect your hearing health, and check if environments meet OSHA/NIOSH safety standards. Your personal decibel meter and hearing guardian.

PROTECT YOUR HEARING BEFORE IT'S TOO LATE

The World Health Organisation estimates that 1.1 billion young people are at risk of noise-induced hearing loss. It's permanent, painless at first, and entirely preventable. HearGuard gives you the awareness you need to act before the damage is done.

ACCURATE DECIBEL METER

• Real-time SPL measurement with calibrated microphone
• A-weighted (dBA) and C-weighted (dBC) frequency filtering
• Live min, max, and average noise level display
• Professional-grade accuracy comparable to dedicated sound level meters
• Colour-coded safety zones: green, yellow, and red at a glance

HEARING HEALTH PROTECTION

• Daily noise dose tracking based on NIOSH and OSHA guidelines
• Hearing risk alerts when levels exceed safe thresholds (85 dB)
• Cumulative exposure calculation - know exactly how long is too long
• Personalised hearing health insights and recommendations
• Tinnitus awareness: understand what prolonged exposure actually does

FREQUENCY ANALYZER

• Real-time spectrum analyzer with FFT visualization
• Identify dominant frequencies in any environment
• Tone generator for hearing checks and audio testing
• Professional audio measurement tools for musicians, engineers, and audiophiles

NOISE MONITORING & HISTORY

• Continuous background monitoring with customisable alerts
• Full measurement history with timestamps and locations
• Daily and weekly noise exposure dashboards
• Export data for workplace compliance documentation
• Construction site and industrial noise logging

DESIGNED FOR YOUR HEARING HEALTH

• Apple Health integration - noise exposure data synced automatically
• Hearing test functionality to check your sensitivity baseline
• Educational content about safe listening levels and ear protection
• Works with AirPods, EarPods, and external microphones

PREMIUM FEATURES (HearGuard Pro)

• Unlimited measurement history
• CSV and PDF export for compliance reporting
• Advanced spectrum analyzer with frequency labels
• Custom alert thresholds
• Ad-free experience

YOUR PRIVACY MATTERS

HearGuard processes all audio entirely on your device. We never record, store, or transmit your audio data. No microphone recordings leave your iPhone - only decibel levels are measured.

Used by musicians protecting their ears at rehearsal, parents checking noise levels at events, construction workers monitoring OSHA compliance, and anyone who cares about long-term hearing health.

Download HearGuard today and take control of your hearing health.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bgmobiledev.com/privacy/hearguard