Decibel Meter vs SonoMeter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel Meter
This tool transforms your iPhone into a real-time sound level meter. It measures and displays environmental noise in decibels, helping you monitor sound at home, work, or outdoors. Protect your hearing by detecting loud noises and staying aware of your sound environment.
- Real-time decibel measurement
- Dynamic graph display
- Min/Max/Average sound levels
- Measuring timer
- Pause and Reset buttons
- Noise pollution checks
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Decibel Meter is a powerful and easy-to-use sound level meter (also known as dB meter, SPL meter, or noise detector) that turns your iPhone into a real-time sound measuring tool. Using your device’s built-in microphone, Decibel Meter detects and displays environmental noise levels in decibels (dB). Whether you're monitoring noise at home, measuring sound at work, or checking noise pollution outdoors – this app provides accurate, real-time readings. Key Features: - Real-time decibel measurement with dynamic graph - Sound level display: Min / Max / Average - Measuring timer included - Easy-to-use Pause and Reset buttons - Useful for sound tests, noise pollution checks, and SPL monitoring Use Cases: - Monitor home or work noise - Measure traffic, music, or construction sound - Perform noise tests for health and safety - Detect sound levels in quiet or noisy environments Sound measurements depend on your device’s microphone and may vary from professional SPL meters. Protect your ears and your health. Use Decibel Meter to detect loud noise and stay in control of your sound environment. Download now and start measuring sound today! Privacy Policy: https://www.getpaoapps.com/privacy Terms of Use: https://www.getpaoapps.com/terms
SonoMeter
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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
Verdict
The clearest difference is update cadence: Decibel Meter at monthly against SonoMeter's every 8 months. SonoMeter's advantage is device support (3 vs 1). On price, ads, in-app purchases 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
Both are free to download. Decibel Meter sells 3 in-app purchases, starting at $2.99 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.
Decibel Meter ships an update monthly, SonoMeter every 8 months. Both last shipped on October 24, 2026.
| Parameter | Decibel Meter | SonoMeter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (54 ratings) — better | — |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 54 — better | — |
| Update frequency | Monthly — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 16 |
| Further details — not scored | ||
| Size | 176 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | PaoApps | Raphael Goupille |
In-app purchases
Decibel Meter
- Weekly Access with Trial3 Days trial$2.997 Days
- Weekly Access$2.997 Days
- Yearly Access$17.991 Year
SonoMeter
- Weekly Subscription$1.997 Days
- Monthly subscription$5.991 Month
- Annual subscription$24.991 Year
- Premium Lifetime$6.99
Questions
Is Decibel Meter free?
Is SonoMeter free?
Do Decibel Meter or SonoMeter have ads?
Which is updated more often, Decibel Meter or SonoMeter?
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