Decibel Meter: Sound Level dB

Noise & dB Sound Level Meter

Only for iPhone

Free · In‑App Purchases

iPhone

Turn your iPhone into a sound level meter. Measure ambient noise in decibels with min/max/avg tracking, real-time charts and CSV export. No ads, ever. Decibel Meter turns your iPhone into a fast, accurate sound level meter. Measure ambient noise in decibels (dB) anytime, anywhere — at home, at work, at concerts, in cafes, or in the gym. Clean design, instant results, no clutter, no ads. WHAT YOU CAN DO • Live Decibel Reading Watch sound levels update in real time, with a colorful indicator that shifts from green (quiet) through yellow (moderate) to red (loud). • Min, Max & Average Track the quietest moment, the loudest peak, and the average noise level of every session. • Real-time Sound Chart (Premium) See your environment's noise pattern visualized as a smooth live chart. • Measurement History (Premium) Save up to 50 sessions with date, min, max, average and duration. Compare locations, times of day or before/after changes. • CSV Export (Premium) Export your full history as a CSV file. Share it via email, AirDrop or any app — perfect for reports, schoolwork or simple personal tracking. • Manual Calibration (Premium) Fine-tune readings against a reference device with a ±20 dB offset slider that fits your hardware. WHY DECIBEL METER • Privacy first — all measurements stay on your device. No accounts, no cloud, no tracking. • 100% offline — works without an internet connection. • Zero ads — we don't show ads in any of our apps. Ever. • Beautifully simple — built natively for iOS with a clean, minimal interface. GREAT FOR • Checking how loud your office, classroom or living room really is • Measuring noise levels at concerts, restaurants, gyms or events • Comparing the quietness of different sleeping spots • Curious kids, students and tinkerers learning about sound • Anyone who's ever wondered "how many decibels is this?" PREMIUM Unlock advanced features with a one-time premium upgrade — no subscriptions to forget about. Premium adds the real-time chart, measurement history, CSV export and manual calibration. IMPORTANT This app is intended for entertainment and informational use only. It relies on your device's built-in microphone, which is not a calibrated laboratory instrument. Do not use Decibel Meter as a substitute for a professional sound level meter, occupational safety equipment, or any medical or legal measurement. Privacy Policy: https://docs.google.com/document/d/1VIB9JpstwHkzFK1qt1sQG2_SpS8igRyo7RmXM3TKgFY/edit?usp=sharing Terms & Conditions: https://docs.google.com/document/d/1fp3oD34VyItpvPAFvjGB3d8NF79wjSEBsmqHLfMaJQU/edit?usp=sharing

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Eray Hamurlu LLC, 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 Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Eray Hamurlu LLC
Size
  • 16.2 MB
Category
  • Utilities
Compatibility
Requires iOS 18.6 or later.
  • iPhone
    Requires iOS 18.6 or later.
Languages
English and 5 more
  • English, French, German, Portuguese, Spanish, Turkish
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © Eray Hamurlu LLC
  • Privacy Policy

    • More by Eray Hamurlu LLC

    You Might Also Like