mr spectra

Sumanta Raha

4.37

84 reviews

10,000+
Downloads

Free

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

4.37 · 84 reviews · 10,000+ downloads

Download from Google Play

Pros & Cons

FFT-based real-time analysis provides immediate visual feedback
Integrated mood lighting through customizable strobe lights
Weighting filters (A/C/Z) enable nuanced sound analysis
Flexible visuals with multiple scopes and customizable color/display options

No explicit real-time RTA, octave analysis, or calibration workflow listed
Only device microphone input is documented; external mic support is not specified
Not ranked in any top lists

About mr spectra

mr spectra is a music & audio app developed by Sumanta Raha.

How many times has mr spectra been downloaded?

mr spectra has been downloaded 14 thousand times. In the last 30 days, the app was downloaded 11 times.

What is the rating of mr spectra?

mr spectra is rated 4.37 out of 5 stars, based on 84 ratings.

Is mr spectra free?

mr spectra is free to download. The last update was on July 26, 2025.

What are the requirements for mr spectra?

mr spectra requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since August 2020.

Description

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.

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More data about mr spectra

Price	Free to download
Total downloads	14 thousand
Recent downloads	11
Rating	4.37 based on 84 ratings
Ranking	Not ranked
Version	N/A
APK size	N/A
Number of libraries	9
Designed for Android	6.0+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the mr spectra app

Google Play Rating history and histogram

Rating history

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Downloads over time

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mr spectra has been downloaded 14 thousand times. Over the past 30 days, it has been downloaded 11 times.

Changelog of mr spectra

Show changelog

Developer information for Sumanta Raha

Sumanta Raha

contact@msraha.in

Website

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Comments on mr spectra for Android

★★★★★ Jason Collins · May 30, 2021

I really like this app. It's especially fun to watch the app while playing music on my phone. I do have to say this app is very accurate with the dB reading. I work at the airport and fueling an Airbus 320 with the airpacs running is at 82dB. My BAFX Decibel meter/Sound pressure wave meter reads the same as this app on my Samsung S10e Android 11. I personally wish I could see a widget or live screen saver if that makes any sense. I love the colors. I want to write more, but I'm at my limit.

★★★★★ Silvy · Jul 21, 2026

I can play spectra by chipzel on this app called spectra, and it works with YouTube

★★★★★ Khaled Akbar · Feb 26, 2023

I hope devs will install options for audio internal output not only mic output coz dog barkin and cock crowing will enter the simulation process thank you for the app devs

★★★★★ Khaled Akbar · Aug 21, 2021

Awesome visualizer it brightens my life Thank you for the response I just forgot to look at the Settings recently 😮🧡🧡🧡 may I suggest the scopes must be color white or gray and has switched for mic or audio internal and background pick up gallery thanks

★★☆☆☆ Robin Sparrow · Apr 27, 2022

Limited frequency range: only goes up to 4000Hz, and you can't adjust it. Frequency range is also locked to a linear scale when it always makes more sense to display frequency logarithmically.

★☆☆☆☆ Robert Struzinski · Aug 3, 2025

What good is an audio spectrum app that goes only to 4kHz? Try SOUND ANALYZER APP, it's the only free audio test app that works correctly, you'll need to use an external test tone, but they're free in other apps.

Google Play Rankings for mr spectra

This app is not ranked

Technologies used by mr spectra

9 libraries

Subscribe to see full permission and library details

Frequently asked questions about mr spectra

Is mr spectra free?

Yes. mr spectra is free to download from Google Play.

Is mr spectra still available?

Yes. mr spectra is on Google Play, and the last update we saw was on July 26, 2025.

Does mr spectra contain ads?

Yes. Google Play lists mr spectra as containing ads.

What Android version does mr spectra require?

mr spectra runs on Android 6.0 and higher.

Is mr spectra suitable for children?

Google Play rates the content of mr spectra as suitable for everyone.

How many times has mr spectra been downloaded?

Google Play lists 10,000+ downloads for mr spectra.

How do people rate mr spectra?

mr spectra scores 4.37 out of 5 stars, from 84 ratings on Google Play.

Who made mr spectra?

mr spectra was developed by Sumanta Raha. It is listed in the music & audio category on Google Play.

What are the best alternatives to mr spectra?

People looking at mr spectra also look at these music & audio apps: Decibel X - Pro Sound Meter, SmarterSound - Sound analyzer, Sound Spectrum Analyzer, AudioTool, Sound Level Meter.

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More apps

mr spectra

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

Pros & Cons

About mr spectra

How many times has mr spectra been downloaded?

What is the rating of mr spectra?

Is mr spectra free?

What are the requirements for mr spectra?

More data about mr spectra

Alternative downloads for the mr spectra app

Ad-free alternatives (16)

Top rated similar apps (16)

Most downloaded similar apps (16)

More from Sumanta Raha

Google Play Rating history and histogram

Downloads over time

Changelog of mr spectra

Developer information for Sumanta Raha

Share mr spectra

Comments on mr spectra for Android

Google Play Rankings for mr spectra

Technologies used by mr spectra

Frequently asked questions about mr spectra

Is mr spectra free?

Is mr spectra still available?

Does mr spectra contain ads?

What Android version does mr spectra require?

Is mr spectra suitable for children?

How many times has mr spectra been downloaded?

How do people rate mr spectra?

Who made mr spectra?

What are the best alternatives to mr spectra?