Decibel Meter & Noise Detector
dB Watermark Video & Tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Record neighbor noise with live dB + GPS on video. Real-time spectrum, auto-record overnight, 100% on-device. 3-day Premium trial.
Neighbor noise keeping you up? A low hum shaking the walls? Need clear proof for your HOA, landlord, or Airbnb host?
Decibel Meter is a professional sound level meter, real-time spectrum analyzer, and video noise recorder for iPhone — so you can document what you hear and share it. Works fully offline. No cloud uploads.
=== BUILT FOR REAL DISPUTES
• Video evidence with live dB, time, and GPS burned into the footage
• Live monitoring with Max, Min, Average, and Leq
• High-sensitivity modes to reveal low-frequency hums that basic dBA apps miss
• Voice-activated overnight recording with optional AI triggers (Premium)
• Private local library — export via AirDrop, Mail, or the Files app
=== VIDEO EVIDENCE YOU CAN SHARE Turn “it’s loud” into footage you can send.
• Live decibel watermark on every frame
• Timestamp + GPS overlay for where and when it happened
• On-screen waveform while you record
• Up to 5× pinch-to-zoom for distant construction or parties
Useful for HOA complaints, landlord–tenant issues, short-term rental checks, and local noise reports.
=== LIVE SOUND LEVEL METER & SPECTRUM
• Real-time dB with Max / Min / Avg / Leq
• Spectrum analyzer: 1024 FFT, or detailed 2048 FFT (Premium)
• A, C, and Z weighting
• High Sensitivity mode for deep bass, HVAC, and structural rumble
• Fullscreen LED view + Live Activities / Dynamic Island
=== AUTO RECORD WHEN IT GETS LOUD • Custom dB trigger and tail delay
• Keep measuring in the background while you use other apps (when enabled)
• Premium AI filters: focus on dogs, engines, music, and similar events
• Segmented overnight saving to reduce data loss if the battery dies (Premium)
=== YOUR LOCAL EVIDENCE LIBRARY
• Voice clips, video evidence, and metadata in one place
• Play, rename, delete, or batch-share
• Sort by date, peak dB, or name
• Device calibration offset for more consistent reference readings
=== PREMIUM — 3-DAY FREE TRIAL Try the full toolkit free for 3 days:
• Advanced 2048 FFT spectrogram for elusive low-frequency noise
• Extended video evidence limits vs free tier
• AI-triggered recording
• Overnight / sleep report export (PDF & CSV where available)
• Ad-free experience
=== PRIVACY — ON-DEVICE ONLY All measurement, AI classification, recording, and video overlays run on your iPhone.
Decibel Meter works offline and does not upload your audio, video, or ambient data to our servers.
=== DISCLAIMER Decibel Meter is not a certified Class 1 or Class 2 sound level meter. Readings are high-precision reference estimates for personal comparison, logging, and documentation — not for legally required industrial metrology or occupational safety certification.
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy:
https://decibelmeterpro.com/privacy.html
- Optimize monitoring accuracy
- Optimize video monitoring
The developer, Offline Music, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Offline Music Tech Limited
- Size
- 16.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
English and 33 more
- English, Arabic, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- DecibelPro Premium Yearly $19.99
- DecibelPro Premium Monthly $9.99
- DecibelPro Ads Free $2.99
- DecibelPro Premium Weekly $2.99
- Copyright
- © Decibel Meter