Comparison

Decibel Meter 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

This tool transforms your iPhone into a professional sound level meter, measuring decibels and analyzing sound frequencies. It helps identify harmful noise levels to protect your hearing and health, offering detailed insights and measurement history.

Highlights
  • Professional sound level meter
  • Sound frequency analysis
  • Noise dosimeter with standards
  • Accurate sound pressure measurements
  • Save and export measurements
  • Advanced measurement charts
  • MIN/MAX/AVG data
Features
Read full description

Decibel Meter is a professional tool to measure decibels & analyze sound frequency. This app turns your iPhone into a professional sound level meter, detects harmful noises and helps protect your health & hearing. Measure the noise level around you and protect yourself in case of excessive volume. Main Features: * A noise dosimeter will help you understand how noisy it is at your workplace or home. * Dosimeter with NIOSH, OSHA standards * Accurate sound pressure measurements * Various types of measurements: dBa, dBc, dBz * Save measurements to the database right on your iPhone * Get MIN / MAX / AVG information for your measurements * Export measurements * Advanced charts show you the deep details of your measurements Is your job high in noise? Do you want to find out if the neighbours are not exceeding the permissible volume values? Do you want to monitor the health of your ears? This means that our application can serve you as a faithful assistant. Are you ready to give it a go? Subscription information about pricing and terms: The app is based on the freemium model: it's free to use. However, you can subscribe for unlimited access to all features with unlimited usage. I provide different options. The longer period – the profitable subscription. Privacy Policy: https://sites.google.com/view/richapps/privacy-policy Terms of Use: https://sites.google.com/view/richapps/terms-of-use

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 Meter4 screens
SonoMeter4 screens

Verdict

The call

Decibel Meter and SonoMeter are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 sells 4 in-app purchases, starting at $3.99 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 ships an update every 11 months, SonoMeter every 8 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

ScorecardNo meaningful differences
Decibel Meter versus SonoMeter: the parameters behind the verdict, then further details
ParameterDecibel MeterSonoMeter
PriceFreeFree
Rating3.5 (55 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings55 — better—
Update frequencyEvery 11 monthsEvery 8 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better16
Further details — not scored
Size18 MB35 MB
Age rating4+4+
DeveloperRychard MatskevichRaphael Goupille

In-app purchases

4 purchases

Decibel Meter

Subscriptions4
  • Decibel Meter Premium Weekly3 Days trial$3.997 Days
  • Noise Spectrum Detector VIP3 Days trial$8.991 Month
  • Noise Frequency Checker VIP$19.993 Months
Show 1 more
  • Sound Level Analyzer dB VIP$29.991 Year
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 free?
Decibel Meter 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 or SonoMeter have ads?
Neither Decibel Meter nor SonoMeter shows ads.
Which is updated more often, Decibel Meter or SonoMeter?
Decibel Meter ships an update every 11 months, and SonoMeter every 8 months. Most recently, Decibel Meter was updated on October 27, 2026 and SonoMeter on October 25, 2026.

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