Comparison

i Sound Level 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

i Sound Level Meter

Measure the noise levels around you with this sound meter. Track maximum and minimum decibel values during your measurements. For the most accurate readings, consider using a high-performance noise meter.

Highlights
  • Measures ambient noise levels
  • Tracks maximum noise values
  • Tracks minimum noise values
  • Displays noise measurements
Features
Read full description

The noise meter (noise measuring aparatus). There may be an error of measurement for each smart phone. You can measure how much noise around him. You can check the maximum and minimum values ​​to start You noise measurements. It is recommended to use a high-performance noise meter for accurate noise measurement.

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

i Sound Level Meter2 screens
SonoMeter4 screens

Verdict

The call

The clearest difference is in-app purchases: i Sound Level Meter at none against SonoMeter's 4. i Sound Level Meter also leads on update cadence (every 2 months vs every 8 months) and iOS requirement (13.0 vs 16). SonoMeter's advantage is ads (none vs shown). On price and device support 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. SonoMeter sells 4 in-app purchases, starting at $1.99 per 7 days. i Sound Level Meter asks for nothing beyond the download.

UpkeepUpdate frequency

i Sound Level Meter ships an update every 2 months, SonoMeter every 8 months. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
i Sound Level Meter versus SonoMeter: the parameters behind the verdict, then further details
Parameteri Sound Level MeterSonoMeter
PriceFreeFree
Rating4.4 (38 ratings) — better—
Positive reviews22.0% of reviews—
Number of ratings38 — better—
Update frequencyEvery 2 months — betterEvery 8 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better16
Further details — not scored
Size7 MB35 MB
Age rating4+4+
DeveloperEONSOFTRaphael Goupille

In-app purchases

None

i Sound Level Meter

No in-app purchases

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 i Sound Level Meter free?
i Sound Level Meter is free to download, with no in-app purchases.
Is SonoMeter free?
SonoMeter is free to download, with in-app purchases available.
Do i Sound Level Meter or SonoMeter have ads?
i Sound Level Meter shows ads; SonoMeter does not.
Which is updated more often, i Sound Level Meter or SonoMeter?
i Sound Level Meter ships an update every 2 months, and SonoMeter every 8 months. Most recently, i Sound Level Meter was updated on October 24, 2026 and SonoMeter on October 24, 2026.

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