Audio Test

Test audio path gain by generating tones and at the same time recording it

Fabris Luca · com.fbrlcu.audiotest

Not rated yet 50K+ downloads v2.5.23 1.5 MB Android 4.4+ PEGI 3 · Everyone

Download APK 1.5 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.5.23 (53)
Updated: Jul 10, 2026 (3 months ago)
APK size: 1.5 MB
Requires: Android 4.4+ (API 19)
CPU support: Any (no native code)
Category: Music & Audio (app)
Listed since: Mar 20, 2021 (at least)
Permissions: 11 (1 sensitive)
Website: sites.google.com/site/fbrlcu2
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Audio Test is an app by Fabris Luca in the Music & Audio category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

It asks for 11 permissions, 1 of them sensitive: record audio. The app can read the advertising ID that ad and analytics services use.

What's new in v2.5.23

minor improvement

Description

From the listing uploaded by “appupdater”.

The Test is done at many different frequency so to produce the graph of the audio path response. The purpose of the Test is to compare the audio path gain of a system composed of an amplifier and loudspeaker but you can test also only a loudspeaker or earphone. The phone generate a list of tones(frequencies), the signal is acquired from the microphone and the relative power is calculated for each frequency. Please note that 0dB is an undetermined value so the measures are relative and not absolute values. A teacher used this App to do an experiment in his class, he was able to find the speed of sound using a phone and a cardboard tube. Determining the loudest frequencies, then these are the resonance frequencies and will lead to the speed of sound because the length of the tube is related to the wavelength of the resonant frequencies. The tests are in the internal directory of the App to improve compatibility with Android 10 (Android/data/com.fbrlcu.audiotest)

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 10, 2026.
Certificate issued to “Fabris Luca” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Jul 10, 2026
Validated against Google Play Jul 10, 2026
Signed byCN=Fabris Luca, L=Ravenna, ST=Italy, C=39
Signing certificate (SHA-1)1F:C9:40:BE:D5:EE:D2:95:60:37:A8:0F:93:B3:92:06:41:AE:4B:C1
File MD58f08471678bbf3e340ce87cbe0ac3933
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (11)

Audio Test requests 11 permissions, 1 of them sensitive.

Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.fbrlcu.audiotest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Microphone android.hardware.microphone
Portrait screen android.hardware.screen.portrait

Audio Test APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Audio Test APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 8f08471678bbf3e340ce87cbe0ac3933.