mr spectra

FFT Audio Spectrum Analyzer with Weighting Filters. Enjoy as a Music Mood Light.

msraha.in · in.msraha.mrspectra

Not rated yet 10K+ downloads v2.32 2.6 MB Android 10+ PEGI 3 · Everyone

Download APK 2.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.32 (232)
Updated: Sep 28, 2026 (11 days ago)
APK size: 2.6 MB
Requires: Android 10+ (API 29)
CPU support: Any (no native code)
Category: Music & Audio (app)
Listed since: Dec 15, 2022 (at least)
Permissions: 7 (1 sensitive)
Website: msraha.in
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

mr spectra is an app by msraha.in in the Music & Audio category, listed since at least December 2022. It has no native code, so it runs on any Android processor.

Since version 2.30, the APK grew from 2 MB to 2.6 MB and the minimum Android version rose from 6.0 to 10. It asks for 7 permissions, 1 of them sensitive: record audio. It asks for the same permissions as version 2.31.

What's new in v2.32

Some bug fixes and performance improvements.

Description

From the listing uploaded by “appupdater”.

mr spectra is an fft based audio spectrum analyzer with strobe lights and built-in weighting filters (A-weighting for human hearing, C-weighting for machine sounds and Z-weighting with no filter). Enjoy mr spectra with your music as a musical mood light. Quick tips: * Show or hide the dB and Max dB values. * Go to settings and add the Strobe Lights, or a decibel, wave, or spectrogram scope. Display Settings: * Select color schemes. * Solid bars or line graphs. Scope Settings: * Strobe Lights. * Decibel Scope. * Sound Wave Scope. * Spectrogram. Strobe Lights Settings: * 3 lights (Bass, Mid, Treble) or 4 lights (Bass, Mid, Treble, High Treble). * Full screen mode. Decibel Settings: * Use A-Weighting, C-Weighting or Z-Weighting filters (dBA, dBC, dBZ). * Show decibel and Max dB values. * Set zero dB level. FFT Options: * Use Hann or rectangular windowing. Technical Details: * Input source: device mic. * Sound captured: 16-bit PCM mono. * Sampling rate: 44.1 kHz. * Audio amplitude range: 1 to 32767. * FFT latency: 23 milli seceonds. * Decibel calculations: based on rms amplitude, relative to a base level of 1 rms. The base level can be adjusted by user to calibrate dB levels.

Version history

3 versions are listed, going back to v2.30. Since v2.32 it requires Android 10+.

v2.32 LATEST Sep 28, 2026 2.6 MB TRUSTED v2.31 Sep 1, 2026 2 MB TRUSTED v2.30 Jun 7, 2025 2 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 28, 2026.
Certificate issued to “Mita Raha” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Sep 28, 2026
Validated against Google Play Sep 28, 2026
Signed byCN=Mita Raha, L=Kolkata, C=IN
Signing certificate (SHA-1)DA:F4:FF:84:E8:40:AD:98:A5:67:E6:AA:C7:80:EE:8D:A4:8C:26:2F
File MD5eb2c93ec029b940df63d70fe06ee78a1
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 (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (7)

mr spectra requests 7 permissions, 1 of them sensitive.

Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Foreground service media projection android.permission.FOREGROUND_SERVICE_MEDIA_PROJECTION
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) in.msraha.mrspectra.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
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

mr spectra APK: questions and answers

Is there a version of mr spectra for older Android phones?

The current version needs Android 10 or later. Version 2.31 is the newest listed build that installs on Android 6.0 and later. Get version 2.31 · All versions

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 mr spectra 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. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is eb2c93ec029b940df63d70fe06ee78a1.