Spectroid

Audio Spectrum Analyzer

Carl Reinke · org.intoorbit.spectrum

4.0 out of 5 (2 ratings) 1M+ downloads v1.1.2 105.5 KB Android 4.0+ PEGI 3 · Everyone

Download APK 105.5 KB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.1.2 (31)
Updated: Feb 5, 2026 (8 months ago)
APK size: 105.5 KB
Requires: Android 4.0+ (API 14)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Sep 18, 2022 (at least)
Permissions: 1 (1 sensitive)
Website: plus.google.com/communities/103947229376375759050
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Spectroid is an app by Carl Reinke in the Tools category, listed since at least September 2022. It has no native code, so it runs on any Android processor.

It asks for 1 permission, 1 of them sensitive: record audio.

What's new in v1.1.2

Fix missing spectrum plot on Android P.

Description

From the listing uploaded by “appupdater”.

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.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Feb 5, 2026.
Certificate issued to “www.intoorbit.org” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Feb 5, 2026
Validated against Google Play Feb 5, 2026
Signed byCN=Carl Reinke, OU=None, O=www.intoorbit.org, L=Albuquerque, ST=New Mexico, C=US
Signing certificate (SHA-1)E1:C6:1E:A8:8D:52:2C:C8:A9:FC:26:31:DE:71:73:9D:23:24:D8:D2
File MD589d03f19adf20bf210ce25e49f8f8a4d
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 (1)

Spectroid requests 1 permission, 1 of them sensitive.

Record audio (microphone) Sensitive android.permission.RECORD_AUDIO

Required hardware & features

Basic touch input android.hardware.faketouch
Microphone android.hardware.microphone

Spectroid 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 Spectroid 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 89d03f19adf20bf210ce25e49f8f8a4d.