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Android Apps > Tools > Spectroid
Spectroid icon

Spectroid

by Carl Reinke · Tools · Free
On Google Play since September 2014 · Data updated 2026-10-23
Google Play

Spectroid is made and published by Carl Reinke. AppBrain is an independent app data site and isn't affiliated with Carl Reinke. The app name, icon, screenshots and description belong to Carl Reinke and are shown as published on Google Play.

AppBrain's verdict

EstablishedPopularLoved by users
Rating on Google Play
4.56
15,628 ratings
Installs
4.9 million
Last updated
August 26, 2022
Ads
No ads
Size
105.5 KB

Spectroid is popular, with 4.9 million installs. Users love it: 4.6 stars from 15,628 ratings.

Summary

Spectroid is a real-time audio spectrum analyzer offering detailed frequency resolution across the full spectrum. It provides intuitive, interaction-friendly visualization—like pinch-to-zoom—and is accessible as a lightweight tool for musicians, audio enthusiasts, and researchers. With 1,000,000+ downloads and 16K in the last 30 days, it demonstrates steady, ongoing interest.

Pros & Cons

  • Real-time spectrum analysis with broad frequency coverage
  • Lightweight and efficient, low resource use
  • Intuitive pinch-to-zoom interaction for detailed inspection
  • Clear, readable dBFS-based readings
  • Non-instrumented spectrum data suitable for exploratory analysis
  • Lacks built-in spectrogram visuals and FFT-based display options that some competitors offer
  • Not a calibrated instrument for precise measurements; intended for exploratory use
  • Export capabilities for calibrated data are not described

User feedback

Ratings and reviews on Google Play

Comments on Spectroid for Android

★★★★★ Hawkeye 685 · Dec 1, 2025
It's a really good spectrogram, as others have said it does need some configuring (sometimes it's useful to change settings for specific circumstances) and once it's set up the waterfall allows you to really easily visually analyze sound. I've used it to find faulty electronics by visually seeing them emitting high-pitched sounds as I take the phone near them, and if you're trying to learn voice control (ie vocal feminization :3) it lets you visually see resonance! Highly recommend this app 💜
★★★★★ Ian Richter · Dec 2, 2025
I use it all the time for music/audio projects. Great for when you need to know what frequencies you're hearing. Would love some options such as viewing custom bandwidths or adjusting the view for how much time the spectrogram is showing.
★★☆☆☆ IT IZME · Aug 6, 2026
I got this to find the jerk neighbor using hi frequencies to control another neighbors dog. Its reads 18 -20khz. Not ultrasonic. The problem I see with this app is ALL the Peak markers are forced to be in the exact same area, within a few hertz, because of ambient sounds. Would help if there was a way to put the markers inside a specific range, entered into a min & max box. Otherwise, no complaints. Now, off to get an external mic & parabolic, to go find this A H
★☆☆☆☆ Joe · Mar 31, 2026
The app has been compromised by playstore.it should clearly tell frequencies, but its settings are set till you pay the vultures! don't use it it's not accurate.

Google Play Rating history and histogram

13K
1.3K
540
400
810

Store listing

By Carl Reinke, from Google Play

“Audio Spectrum Analyzer”

Spectroid Screenshot 1 of 4
Spectroid Screenshot 2 of 4
Spectroid Screenshot 3 of 4
Spectroid Screenshot 4 of 4
Screenshots by Carl Reinke, from the Google Play listing
Description by Carl Reinke Written by the developer, not by AppBrain. Click to read.
Spectroid is a real-time audio spectrum analyzer with reasonable frequency resolution across the the entire frequency spectrum.

💬 FAQ 💬

Q: Why are the dB values negative?
A: Spectroid uses dBFS (Full Scale) where 0 dB is the maximum power that the microphone can measure, so the decibel values are negative because the measured power is less than the maximum power.

Q: Can I zoom in on the spectrum plot?
A: Yes, do a two-finger pinch-to-zoom gesture.

Q: Why are there discontinuities/gaps in the spectrum plot and waterfall?
A: Spectroid uses multiple FFTs overlapped in frequency in order to provide better frequency resolution at lower frequencies than a single FFT. The caveat of this method is varied impulse response and minor discontinuities in frequency. The upside is that it can efficiently produce a spectrum that better matches the frequency resolution of human audio perception. It's still probably not as good as your ears though!

Q: Can I export the spectrum data?
A: Spectroid doesn't make your device a calibrated instrument. If you need the spectrum data then you should be using an actual spectrum analyzer rather than an app on your mobile device.

Recent changes:
◆ Improve usability on high-density displays
Official page on Google Play

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
0
App size
105.5 KB
Needs Android
4.0+
Content rating
Everyone

Technologies used by Spectroid

1 permissions
Subscribe to see full permission and library details
Trust & Safety: Spectroid requests android.permission.RECORD_AUDIO to access the microphone for real-time spectrum analysis. This is standard for audio analysis apps. No additional sensitive permissions are listed.

Releases

Updates seen on Google Play
Version
1.1.2
Launched
September 2014
  • Aug 26, 2022UpdateVersion 1.1.2
  • Feb 2, 2019Installs1,000,000+ installs
  • Aug 3, 2018UpdateVersion 1.1.1
  • Apr 5, 2018Installs500,000+ installs
  • Mar 16, 2018UpdateVersion 1.1.0
Show all changes Show fewer

Alternatives

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SpecStream Audio Spectrum Plot icon SpecStream Audio Spectrum Plot
HARDCODED JOY S.R.L.
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Soundwave: Scope & Spectrum icon Soundwave: Scope & Spectrum
StackStore
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Sound Level Meter icon Sound Level Meter
BOLDEN
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SmarterSound - Sound analyzer icon SmarterSound - Sound analyzer
Agibili
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Speccy Spectrum Analyzer icon Speccy Spectrum Analyzer
spikything.com
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Installs

Tracked by AppBrain
Last 30 days
16 thousand
Per day
530
30-day average
Play install range
1+ million
Launched
September 2014

Installs over time

Spectroid has been installed 4.9 million times. Over the past 30 days, it averaged 530 installs per day.

Rankings

Google Play top charts

Google Play Rankings for Spectroid

This app is not ranked

About the app and developer

About Spectroid

Spectroid is a tools app developed by Carl Reinke.

Install Statistics

Spectroid has been installed 4.9 million times. In the last 30 days, the app was installed 16 thousand times.

User Ratings

Spectroid is rated 4.56 out of 5 stars. The rating is based on 16 thousand ratings.

App Information

Spectroid is freely available from Google Play. The app size is 105.47 kB. The latest version available is 1.1.2. The last update was on August 26, 2022.

Technical Requirements

Spectroid requires Android 4.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since September 2014.

App Performance Report

Get a detailed PDF report for Spectroid with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Developer information for Carl Reinke

Carl Reinke

android@intoorbit.org

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Share Spectroid

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Overview Alternatives History Reviews Rankings Technology
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