Sound Decibel Meter

Name: Sound Decibel Meter
Author: Splend Apps

3.4

Play Protect

Splend Apps

4.5610M+ installs

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Sound Meter - powerful in its simplicity and convenience of use.

Sound Decibel Meter: dB readings from your phone's microphone

By Hafiz Rahman

Editor, tools and utilities

Volume readings in decibels (dB) from the built-in microphone
Recorded samples shown on a graph, not just a single number
Uses the microphone already in the phone
Very loud sounds, around 90 dB and above, may not register
Automatic gain control on some devices can interfere with readings

What Sound Decibel Meter measures

Sound Decibel Meter is a sound level meter. It listens through the microphone already built into an Android phone and reports how loud the surroundings are in decibels (dB). The developer presents it as a general tool for measuring sound volume, so it fits anyone who wants a noise reading for a room, a workspace or a noisy place.

The readings come from the phone's own hardware, so no separate sensor is needed. What the meter can report depends on that microphone, which is covered in the sections below.

Decibel readings from the microphone

The meter converts what the microphone picks up into a volume figure in dB. The developer notes that phone microphones are tuned mainly for human voice, which shapes what the readings capture.

Maximum values are limited by the hardware. Per the listing, sounds around 90 dB and louder may not be recognized at all, so the meter is better suited to ordinary and moderate noise levels than to very loud sources.

Graphing sound samples over a session

Alongside the dB figure, the app displays its samples on a graph. Seeing the sampled readings as a chart shows how the level moves up and down, which a single number cannot.

The listing describes the graph as a helpful part of the measurement, so the chart is the main way to read changes in noise rather than a separate feature.

Device settings that can affect readings

Some Android devices apply automatic gain control to the microphone. The developer warns that this may interfere with how the noise meter operates, so readings on those phones can differ from what the microphone actually hears.

Anyone using the meter for a specific measurement should keep this in mind, along with the 90 dB ceiling the listing mentions.

What's new

Oct 19, 2026

Usability improvements and minor bug fixes.

About this APK

The build we hold is Sound Decibel Meter 3.2 (APKS split bundle) for Android 10 and up.

Version: 3.2; 109
Requires Android: 10+

Package ID: com.splendapps.decibel
Format: APKS split bundle
Malware scan: Google Play Protect
Permissions: 15 declared · 1 sensitive; Microphone
Signed by: CN=Mateusz Seifert, O=Splend Apps
Certificate SHA-256: 00c476a2b511016eb38b03f01b645549f34cf49bfc69d1d4c9362e7333f6d00b