Best 6 Sound Level Meter Apps in 2026: Find the Right Fit

Introduction

NIOSH Sound Level Meter is the strongest overall sound level meter app in this roundup. It focuses on noise exposure and was developed by acoustics and hearing-loss experts. Below, we compare six iPhone and Android options, from quick decibel checks to saved sessions and more detailed analysis.

Quick comparison table

Phone microphones provide estimates, and readings can vary by device and recording conditions. Graphs and saved sessions help you see how levels change, but they don’t make phone readings equivalent to measurements from calibrated equipment.

1. NIOSH Sound Level Meter

Best for: iPhone users who want a credible tool for checking noise exposure.

The free NIOSH Sound Level Meter uses the iPhone microphone to measure sound levels and noise exposure. Acoustics engineers and hearing-loss experts developed it, so it has a more specific focus than an app that simply displays a decibel reading.

It looks at noise exposure, not just a single reading. That makes it useful if you want to consider both how loud a sound is and how exposure may add up over time.

2. Decibel Meter · Sound Analyzer

Best for: iPhone users who want to save basic measurement results.

This app measures ambient noise in real time and shows decibel readings, including minimum, average, and maximum levels. These summary values offer a quick sense of the range and typical level during a measurement.

You can save results and review them later, which helps when you want to compare separate checks instead of relying on memory. Its main strength is simple record-keeping: you get a live reading and results you can return to afterward.

3. Decibel Meter - dB

Best for: iPhone users who want to see how sound changes over time.

Decibel Meter - dB shows estimated sound levels in real time, along with current, minimum, average, and maximum readings. A live history graph lets you review the session rather than just see a snapshot.

You can also record sessions for later reference. The graph is the standout feature: it shows when levels rise or fall, which can tell you more than the current decibel reading alone.

4. Decibel Meter Ultra

Best for: iPhone users who want more control over measurement settings.

Decibel Meter Ultra combines sound-level meter, dosimeter, and real-time analyzer features. It measures, records, and tracks sound levels, offering more than a simple display of live decibels.

You can select frequency and time weighting to adjust how measurements are represented. These controls set the app apart if you want to explore measurement settings or look beyond a basic reading. The extra features may be unnecessary for a quick, everyday noise check.

5. Sound Meter: Decibel Meter

Best for: Android users who want a graph and saved sessions.

This app uses your phone’s microphone to estimate sound levels in real time. It shows minimum, average, and maximum readings, while a graph lets you follow changes during a measurement.

You can save sessions and revisit them later. Together, the live graph and session records make it easier to see how levels changed and keep the measurement for reference, rather than relying on a single number.

6. Sound Analyzer App

Best for: Android users who want sound-meter readings alongside audio analysis.

Sound Analyzer App turns a smartphone into a sound-level meter and real-time audio analyzer. Its meter displays decibel readings, and the audio analyzer offers another way to examine sound as it happens.

That combination is the app’s main distinction. Choose it if real-time audio analysis matters alongside a decibel reading. If you’d rather focus on graphs and saved sessions, another Android option in this roundup may suit you better.

How we picked these apps

This roundup covers the six supplied apps and their stated measurement features. We compared practical details, including iPhone or Android availability, real-time readings, minimum and maximum values, session history, and analysis controls.

Some apps focus on displaying decibels; others add saved records, exposure tracking, or adjustable weighting. Those differences can help you choose between a quick check and a closer look at a measurement. In every case, a phone microphone provides an estimate, not a laboratory measurement.

Frequently asked questions

Can a phone measure sound accurately?

A phone microphone can provide a useful estimate, but results may vary depending on the device and conditions. Treat readings as a guide, not a certified measurement. For formal assessments or decisions that require precise levels, use calibrated equipment.

What do minimum, average, and maximum readings mean?

Minimum and maximum are the lowest and highest readings captured during a session. Average summarizes the readings over that period. If sound changes over time, a graph or saved session can help you see when those changes happened.

Which sound level meter app works on Android?

Sound Meter: Decibel Meter and Sound Analyzer App are the Android options in this roundup. The first includes a graph and saved sessions; the second pairs decibel measurements with real-time audio analysis. Check that the app supports your phone and suits what you want to measure.

The verdict

NIOSH Sound Level Meter is the strongest overall pick. It’s free, was developed by acoustics and hearing-loss experts, and focuses on noise exposure as well as sound levels. It’s only available for iPhone, so make sure it works with your device.

For Android, Sound Meter: Decibel Meter is a solid runner-up if you want graphs and saved sessions. iPhone users looking for weighting controls and broader analysis features can consider Decibel Meter Ultra. Treat all phone readings as estimates, not certified safety measurements.