Best decibel meter apps in 2026, compared from their listings

The best decibel meter apps in 2026, going only by their store listings, are NIOSH Sound Level Meter and Decibel X on iPhone, and Sound Meter, Sound Decibel Meter and NoiseCapture on Android, plus dBing, which I built. Want readings checked in a lab? NIOSH. Want one app on both phones? Decibel X or dBing.

Key points

• I made dBing, so I am not neutral. Every claim about the other ten apps comes from their own App Store or Google Play listing, read on 25 October 2026.
• No phone app here is a certified sound level meter. NIOSH Sound Level Meter comes closest: its listing says it was tested to within 2 dBA in the NIOSH acoustics lab.
• Most Android meters say in their own listings that phone microphones top out somewhere around 85 to 100 dB. A rock concert can go past that.
• If you need a noise dose for work, pick an app with a dosimeter: NIOSH, Decibel X or Decibel Meter Ultra.
• If you only want to know how loud the room is right now, any app in the table will do. Pick one that is on your phone and that you will actually open.

Which decibel meter apps are worth a look?

Eleven apps came up when I searched both stores for a decibel meter, and most of them are the ones ChatGPT, Gemini, Perplexity and Google's AI Mode named when I asked them on 25 October. They split into three kinds: quick meters, measurement tools with a noise dose, and audio analysis suites for sound engineers.

This is what each listing said on 25 October 2026. Listings change, so treat the last column as a date stamp.

App	Where I found it	What it measures, per the listing	Last listing update
dBing: Decibel Sound Meter	iPhone, Android	Live dBA gauge, minimum, average (LEQ) and maximum per session, waveform, A or Z weighting, fast or slow response, calibration offset, session history	19 Jun 2026
NIOSH Sound Level Meter	iPhone only	LAeq, TWA, max and peak, noise dose to NIOSH and OSHA rules, A, C and Z weighting, Apple Health	21 Oct 2026
Decibel X	iPhone (iOS 17 or later), Android	Pre calibrated readings, five weightings, dosimeter, FFT, Apple Watch, export to PNG or CSV	11 Oct 2026
Decibel: dB sound level meter	iPhone	Live dB, spectrum analyser, Health export, sleep noise and snoring timeline	12 Feb 2026
Decibel Meter Ultra	iPhone (iOS 18.6 or later)	A, C and Z, peak, dosimeter, octave bands, PDF noise reports	19 Sep 2026
SPLnFFT Noise Meter	iPhone	Leq, peak, L10 and L95, FFT, dosimeter, test signals	24 Dec 2023
AudioTools	iPhone	SPL meter, real time analyser, FFT, speaker polarity, recorder	15 Oct 2026
Sound Meter by Smart Tools	Android	Live dB with real world references, line chart, level alerts	17 Jun 2026
Sound Decibel Meter by Splend Apps	Android	Live dB with a graph	19 Oct 2026
Sound meter: SPL and dB meter by KTW Apps	Android	Live dB, minimum, maximum and average per session, chart	22 Aug 2026
NoiseCapture	Android	Leq and percentile levels, map of your measurements, phone to phone calibration, community noise maps	7 Sep 2026

I left out star ratings and download counts. They tell you how long an app has been around, not how well it measures. A note on names, because it confused me too: several unrelated apps are called Decibel Pro or Decibel Meter, so check the developer name on the listing before you install.

How accurate is a decibel meter app?

Accurate enough to compare one room with another, and often within a couple of decibels of a real meter at everyday levels, but not certified. The best evidence I found is old and from NIOSH itself. In a 2013 NIOSH test, Kardous and Shaw screened more than 130 iOS apps and 62 Android apps, and only four of the Android apps even partly met their criteria for further testing. A few of the iPhone apps landed within 2 dB of the reference meter.

That gap between iPhone and Android is mostly hardware. Apple makes a small set of phones, so a developer can calibrate for each one. Android has thousands of models, and the listings say so: Smart Tools warns that sounds over 100 dB may not register, and Splend Apps puts the limit near 90 dB.

What helps on any phone:

• Take the case off. A thick case can cover the microphone.
• Calibrate once. dBing, NIOSH, Decibel X and NoiseCapture all let you set an offset against a reference meter. If you do not have one, a friend's calibrated phone is better than nothing.
• Hold it still and point it at the sound. Do not measure from your pocket.
• Use dBA for hearing. A weighting follows how the ear hears. Flat Z weighting is for checking speakers and machines.

What counts as too loud?

The NIOSH limit is 85 dBA averaged over an eight hour day, and every 3 dBA above that halves the safe time. So 88 dBA is about four hours, 91 dBA about two, and 100 dBA is roughly 15 minutes. A meter app is good for exactly this: noticing that the gym class, the kitchen or the club is well past 85, so you can step out or wear earplugs.

For work, a single reading is not enough. You want an average over the shift, which is what the dosimeter in NIOSH, Decibel X and Decibel Meter Ultra works out. For a noise complaint to a landlord or a council, a phone log is useful as your own record, but expect them to measure with their own equipment.

Where others beat dBing

I will be straight about this, because a comparison that only praises my own app is not worth reading.

• NIOSH Sound Level Meter is the one to trust for workplace checks on an iPhone. It was tested in a lab, and it gives you a noise dose to NIOSH and OSHA rules. dBing has no dosimeter.
• Decibel X and Decibel Meter Ultra give you C weighting, a frequency view and exports. dBing's listings do not mention C weighting, a spectrum view or export.
• NoiseCapture maps where you measured and lets you share readings with a community noise map. dBing does not map anything.
• AudioTools and SPLnFFT are built for sound engineers tuning a room, with real time analysers and test signals. dBing is a meter, not an audio lab.

Where dBing fits: a clean live gauge with minimum, average and maximum for each session and a waveform, on both iPhone and Android, with an offset you can calibrate. On Android, its listing says it processes the sound on the phone and does not record, store or send audio. If you want that and nothing else, try it from the dBing page.

How do I choose?

Four quick checks. It takes two minutes.

1. Check your phone. On Android, look at Decibel X, dBing, NoiseCapture, Sound Meter, Sound Decibel Meter and the KTW app. NIOSH is iPhone only.
2. Decide what the number is for. Curiosity or a quick check: any meter. Work or hearing protection: one with a dosimeter. Tuning speakers: an app with an FFT or analyser.
3. Calibrate if it matters. If you will compare readings over weeks, set the offset once against a reference.
4. Do not argue with a council using a phone. Use the log as your notes, not as proof.

Frequently asked questions

What is the most accurate decibel meter app?

For iPhone, the NIOSH Sound Level Meter has the strongest evidence: its listing says it was tested to within 2 dBA in the NIOSH acoustics lab. Decibel X says it is pre calibrated for Apple devices. On Android, accuracy depends on your phone's microphone, so calibrate whichever app you use.

Can I use a decibel meter app for a noise complaint?

As your own record, yes. Write down the time, the reading and where you stood, and keep a short video if you can. As proof, no: councils and landlords usually measure with calibrated equipment. No app in this list says it is certified for that.

What is the difference between dBA and dBZ?

dBA is A weighted. It turns down the low and very high frequencies the way the human ear does, so it is the one to use for hearing. dBZ is flat and treats every frequency the same, which is useful for speakers, bass and machines. dBing, NIOSH and Decibel Meter Ultra offer both.

Does a decibel meter app record my audio?

It has to listen to the microphone to work, but that is not the same as recording. dBing's Google Play listing says it processes sound on the phone and never records, stores or sends audio. For any other app, read the privacy section of its listing before you install.

Sources

• App Store listings (US) and Google Play listings for every app in the table, read on 25 October 2026: dBing on the App Store, dBing on Google Play, NIOSH Sound Level Meter, Decibel X, Decibel X on Google Play, Decibel: dB sound level meter, Decibel Meter Ultra, SPLnFFT Noise Meter, AudioTools, Sound Meter by Smart Tools, Sound Decibel Meter, Sound meter: SPL and dB meter and NoiseCapture.
• Kardous CA, Shaw PB. So How Good are These Smartphone Sound Measurement Apps? CAOHC Update, 2013, on PubMed Central.
• National Institute for Occupational Safety and Health, Noise and Hearing Loss.

How I wrote this

On 25 October 2026 I searched the US App Store and Google Play for decibel and sound level meter apps and read each listing in full. I did not install or test the other apps, and I left out ratings and download counts. I asked ChatGPT, Gemini, Perplexity and Google's AI Mode which decibel meter app to use, read what people on X said about measuring noise that week, and checked search volumes in Google's Keyword Planner and Google Trends for the US, UK, Canada and Australia. The dBing details come from its two store listings and the facts I keep on file for it.

This is general information, not medical or veterinary advice. If you are worried about your hearing, see a doctor or an audiologist.

By John Osakwe, founder of Etest Tech Hub. I have built apps and websites since 2015, including Etest CBT, FizzFree, Pawlarm and dBing.