Independent software studio

Opulgence

We build focused, carefully engineered tools for Android. Our first product is Frequative — a real-time audio spectrum analyzer.

Explore Frequative About the studio

The studio

Narrow focus, finished work.

Opulgence is the publishing name of an independent developer. Our focus is a useful analysis tool with clear controls and explicit limits.

Honest measurement

We describe what our software actually measures, and where the limits are. Frequative reports relative levels from the Android audio pipeline — we do not dress that up as calibrated instrumentation.

Performance is the product

Real-time analysis needs a responsive display. Frequative offers FFT-size and smoothing controls so you can adjust the analysis to your signal and device.

No data business

Frequative contains no analytics SDK, no trackers and no advertising. Audio is analysed on the device; Google Play Billing checks subscription availability and ownership.

The product

Frequative

A real-time audio spectrum analyzer for Android. It takes live audio, runs an FFT, and displays the resulting spectrum, with controls for FFT size, smoothing and frequency range.

Two sources

Analyse the room through the microphone, or capture System Audio directly from playback on supported Android 10+ devices. System Audio analyses eligible playback audio rather than the microphone. It does not record screen pixels; capture depends on Android and the source app’s capture policy.

Measure, then compare

Freeze a Reference spectrum and hold it as a baseline. Compare live audio against it as a ghost overlay, or switch to Delta to read the per-band difference directly.

Capabilities

Real-time spectrumLive FFT analysis in bar, line and mirrored views.

Microphone analysisAnalyse the acoustic environment around the device.

System AudioPlayback capture on supported Android 10+ devices.

Reference & DeltaFreeze a baseline, then compare live audio against it.

WaterfallWatch the spectrum develop over time.

Fractional-octaveBand analysis for a more musical view of the spectrum.

FFT & smoothing controlsTrade frequency resolution against responsiveness.

Frequency-range controlsFocus the display on the range you care about.

Peak Hold & Peak MarkersRetain and label peaks as they occur.

Fullscreen analyzerA dedicated, uncluttered view for reading detail.

Session HistoryReview previous analysis sessions on the device.

CSV exportTake measurements out for your own analysis.

In the app

Frequative on device

Frequative analysing microphone input in mirrored bar mode, showing a peak frequency of 722.8 Hz at 60.2 dB with a 32768-point FFT. — **Main spectrum**Live FFT, mirrored view

Frequative in Delta mode, showing per-band differences from a frozen reference as green bars above the zero line and red bars below it. — **Reference & Delta**Baseline comparison

Frequative showing the spectrum analyzer above a waterfall view tracking six seconds of spectral history. — **Waterfall**Spectrum over time

Frequative's immersive fullscreen analyzer in landscape, with frequency from 20 Hz to 20 kHz across the horizontal axis and level up the vertical axis. — **Fullscreen analyzer**Immersive landscape view — double-tap to enter

Why we build it

Instrumentation should tell you the truth.

Smoothing, averaging and display choices can make a spectrum easier to read, but can also obscure changes or detail. Understanding those choices helps you interpret what is shown.

Frequative exposes controls for FFT size, smoothing and frequency range. Reference captures a spectrum snapshot for comparison with compatible live data. Microphone hardware and Android playback-capture restrictions set limits on what can be analysed.

Get Frequative

Download

Frequative runs on Android. Full details of what is included, and what Frequative Pro adds, are on the product page.

Frequative product page Direct download

Support

Purchase problems, restoring Pro, and troubleshooting.

Get support

Privacy

What Frequative does and does not do with audio and data.