Comparison

Decibel Meter Sound Level dB vs SonoMeter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Decibel Meter Sound Level dB

This tool transforms your iPhone into a professional sound level meter. It measures noise levels, tracks daily noise exposure, and can record video with embedded decibel data for evidence. Analyze sound frequencies and generate reports for workplace compliance or noise complaints.

Highlights
  • Professional noise dosimeter
  • OSHA & NIOSH standards compliance
  • Video recording with dB overlay
  • Spectrum analyzer (RTA)
  • PDF report export
  • Calibration for accuracy
  • Background measurement mode
Features
Read full description

Decibel Meter: Sound Level & Noise Detector Professional Sound Meter & Noise Dosimeter for iPhone. Turn your device into a precision sound level meter (SPL meter). Trusted by safety officers, acoustic engineers, and thousands of users, Decibel Meter delivers lab-quality noise monitoring with an elegant, intuitive interface. Whether you are checking noise levels for OSHA workplace compliance, recording evidence for noise complaints, or analyzing audio frequencies, this is your all-in-one pocket tool. === KEY FEATURES === PROFESSIONAL NOISE DOSIMETER • OSHA & NIOSH Standards: Accurately track daily noise exposure dose. • Hearing Safety: Monitor TWA (Time Weighted Average) to prevent hearing loss. • Real-Time Analysis: Instant, high-precision dB(A), dB(C), and dB(Z) measurements. VIDEO & EVIDENCE RECORDING • Video Overlay: Record video with real-time decibel levels embedded—perfect proof for noisy neighbors or construction sites. • Photo Snapshots: Capture measurement screens with timestamp, location, and max dB tags. • GPS Tagging: Automatically map your noise measurements to specific locations. ADVANCED ANALYSIS & REPORTING • Spectrum Analyzer (RTA): Visualize sound frequencies (FFT) to identify annoying noise sources. • PDF Export: Generate professional reports with charts, statistics, and exposure data in seconds. • History Log: Save unlimited session data for long-term environmental monitoring. POWERFUL TOOLS • Calibration: Fine-tune microphone sensitivity for professional-grade accuracy. • Background Mode: Continue measuring and logging data even when the app is closed. • Multiple Views: Switch between Waveform, Digital, Analog Gauge, and Spectrum views. • Reference Chart: Compare current noise levels with real-world examples (e.g., "Subway Train," "Whisper"). Download Decibel Meter today and measure the world around you with precision! === Subscription options === The app is free to download, but to access premium features, a subscription is required. With the subscription, you'll enjoy uninterrupted access to our premium features. Your subscription will automatically renew at the end of each term, and your credit card will be charged through your iTunes account within 24 hours before the end of the current period. If you wish to cancel the automatic renewal of your subscription, you can do so at any time by accessing your iTunes account settings. However, please note that refunds will not be provided for any unused portion of the term. To ensure a successful cancellation, please make sure to turn off auto-renewal at least 24 hours before the end of the current period. Terms of use: https://decibelmeter.andyrgb.com/terms Privacy Policy: https://decibelmeter.andyrgb.com/privacy Feedback? Contact us at: andychung.cc@gmail.com

About

SonoMeter

Features
Read full description

Measure noise in decibels, understand it and keep a record, straight from your iPhone. SonoMeter turns your iPhone into a sound level meter: real-time dB readings with A, C or Z weighting, a clear risk scale, and the tools to document noise from neighbors, traffic, work or concerts. MEASURE • Real-time sound level in dB(A), dB(C) or dB(Z) • LAeq, Max and measurement time at a glance • Fast, Slow and Impulse response • Four views: real-time chart, 1/3-octave spectrum, needle gauge and a fun meter • Decibel scale with everyday examples and safe daily exposure times ANALYZE • Tap the chart for a live analysis: level distribution, L10, L50 and L90 • Level over time, noise dose (NIOSH, OSHA) and average spectrum with Premium DOCUMENT • Save sessions with timeline, location and notes • Export a multi-page PDF report • Record videos with the decibels on screen, including LAeq, duration and place • Noise alerts above a threshold, with a log of every exceedance • Continuous listening keeps measuring with the screen locked SLEEP • White, pink or brown noise with a sleep timer and lock-screen controls ALSO • Home Screen widget and Live Activity • Available in English, French, German, Spanish, Italian, Japanese and Chinese • Your measurements stay on your iPhone ABOUT ACCURACY iPhone microphones differ from one model to another. SonoMeter applies a calibration for each iPhone model and lets you fine-tune it against a reference sound level meter. Readings are indicative and do not replace a certified class 1 or class 2 sound level meter for legal measurements. PREMIUM Some features require SonoMeter Premium, available as a one-time purchase or as a subscription. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them in your Apple ID settings. Terms of Use: https://fabulastudio.net/sonometre/cgu Privacy Policy: https://fabulastudio.net/sonometre/confidentialite

Screenshots

Decibel Meter Sound Level dB4 screens
SonoMeter4 screens

Verdict

The call

The clearest difference is ads: SonoMeter at none against Decibel Meter Sound Level dB's shown. Decibel Meter Sound Level dB's advantage is update cadence (every 3 months vs every 8 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Decibel Meter Sound Level dB sells 4 in-app purchases, starting at $4.99 per 7 days and SonoMeter sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Decibel Meter Sound Level dB ships an update every 3 months, SonoMeter every 8 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Decibel Meter Sound Level dB versus SonoMeter: the parameters behind the verdict, then further details
ParameterDecibel Meter Sound Level dBSonoMeter
PriceFreeFree
Rating4.4 (24 ratings) — better—
Positive reviews37.5% of reviews—
Number of ratings24 — better—
Update frequencyEvery 3 months — betterEvery 8 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.616 — better
Further details — not scored
Size19 MB35 MB
Age rating4+4+
Developer汇杭 钟Raphael Goupille

In-app purchases

4 purchases

Decibel Meter Sound Level dB

Subscriptions3
  • Premium Weekly$4.997 Days
  • Premium Monthly$5.991 Month
  • Premium Yearly3 Days trial$29.991 Year
One-time1
  • Lifetime Premium$49.99
4 purchases

SonoMeter

Subscriptions3
  • Weekly Subscription$1.997 Days
  • Monthly subscription$5.991 Month
  • Annual subscription$24.991 Year
One-time1
  • Premium Lifetime$6.99

Questions

Is Decibel Meter Sound Level dB free?
Decibel Meter Sound Level dB is free to download, with in-app purchases available.
Is SonoMeter free?
SonoMeter is free to download, with in-app purchases available.
Do Decibel Meter Sound Level dB or SonoMeter have ads?
Decibel Meter Sound Level dB shows ads; SonoMeter does not.
Which is updated more often, Decibel Meter Sound Level dB or SonoMeter?
Decibel Meter Sound Level dB ships an update every 3 months, and SonoMeter every 8 months. Most recently, Decibel Meter Sound Level dB was updated on October 24, 2026 and SonoMeter on October 25, 2026.

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