dbLogger: Sound Level Meter

Pro dBA noise meter & logger

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

dbLogger turns your phone into a professional-grade sound level meter, frequency analyzer, and noise logger. Most apps measure sound after your phone's operating system has "cleaned it up" with echo cancellation, noise suppression, and automatic gain. dbLogger doesn't. It captures raw, unprocessed audio — from the built-in mic or an external USB-C measurement microphone — so what you see reflects the real acoustic field. MEASURE • Real-time dBA, dBC, dBZ with selectable update rate (200 ms to 10 s) • Fast / Slow / Impulse time weighting; current, AVG (Leq), MAX, PEAK • NR (Noise Rating) and NC (Noise Criteria) single-figure ratings VISUALIZE • Live FFT spectrum, 20 Hz – 20 kHz, with peak-hold envelope • 1/1 & 1/3-octave equalizer with per-band peak caps • Scrolling time-history graph, color-coded by level • Analog dB meter gauge with AVG / MAX / PEAK LOG & REPORT • Log metrics to CSV and raw audio to lossless WAV, independently • Browse sessions, generate PDF / CSV reports, share anywhere BUILT RIGHT • Calibration offset per microphone profile • On-device & private — no account, no cloud; your data never leaves your phone unless you share it dbLogger is free. A single, unobtrusive banner supports development; a one-time Remove Ads purchase clears it forever. Accuracy note: a smartphone microphone is not a certified Class 1/2 (IEC 61672) sound level meter. dbLogger targets reproducible, calibrated relative measurement with standards-correct weighting and rating math. For regulatory/compliance decisions, verify with certified instrumentation.

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• New Glass look — switch between Glass and Classic in Settings • Redesigned meter dial with a record button that shows elapsed time • Graphs: dB axes, frequency marks (50 Hz–20 kHz), elapsed time and larger readouts • New Z (unweighted) display option and clearer time-weighting labels • Microphone picker now lists measurement-capable mics only, with a live mic indicator • Step-by-step calibration guide in the Calibration Wizard • Rotate the phone 180° to point the bottom mic at the source • Stability fixes — exporting while recording no longer crashes

Version 1.1

The developer, BEK Service LTD, 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:

    • Usage Data

  • Data Not Linked to You

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

    • 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
  • BEK Service LTD
Size
  • 89.9 MB
Category
  • Utilities
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 BEK Service LTD
  • Developer Website
  • Privacy Policy

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