Audio / Spectrum Analyzer
Audio / Spectrum Analyzer Summary
Audio / Spectrum Analyzer is a with in-app purchases iOS app in Music And Audio by Loop-Sessions.LLC.. Released in May 2020 (5 years ago). It has 1.1K ratings with a 4.66★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 5.3K monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Jan 20, 2026, version 1.9.1.
Recent activity: 40 new ratings this week View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Nov 4, 2025.
Store info: Last updated on App Store on Jan 20, 2026 (version 1.9.1).
Audio / Spectrum Analyzer was last scanned for SDKs 2025-11-04. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Google4.66★
Ratings: 1.1K
Screenshots
App Description
This RTA app supports simultaneous display of "audio waveform" and "amplitude spectrum" (size of FFT calculation result for each frequency) for audio signals input from a microphone.
(FFT: Fast Fourier Transform, RTA: Real Time Analyzer)
[Features]
- Supports simultaneous display of audio waveform / amplitude spectrum.
- Supports orientation both portrait and landscape.
- Selectable configuration of "audio waveform" / "amplitude spectrum" display.
- Selectable FFT size.
- Selectable window function. (used in amplitude spectrum calculation)
- Selectable frequency weighting. (A-weighting, C-weighting, Flat/Z-weighting)
- Selectable the type of expressing the X direction (frequency) of the amplitude spectrum. (Linear, Log)
- Displays the peak level and its frequency of the amplitude spectrum.
- Peak Hold (displays the results of holding past peak values of the amplitude spectrum).
- Octave Analysis (displays the amplitude spectrum divided into octave bands).
- Generates the audio signal (4 types of waveform)
- Generates the noise signal (white noise, pink noise)
[Setting items]
1. Screen structure :
Screen configuration can be selected.
- Wave: Display audio waveform only.
- Spectrum: Display amplitude spectrum only.
- Vertical: Display audio waveform / amplitude spectrum vertically.
- Horizon: Display audio waveform / amplitude spectrum horizontally.
2. FFT size :
Selectable FFT size. (number of samples used when performing FFT)
1024, 2048, 4096, 8192
3. Window function :
Selectable window function (multiplication just before FFT) used for amplitude spectrum calculation.
Hanning, Hamming, Blackman, No window
4. Frequency Weighting :
Selectable frequency weighting.
- Flat (Z-weighting): No frequency weighting is applied.
- A-weighting: Frequency response that takes into account human hearing.
- C-weighting: Relatively flat response.
5. Spectrum X Scale Type :
Selectable the type of expressing the X direction (frequency) of the amplitude spectrum.
- Linear: Distributed at equal intervals
- Log: The intervals increase logarithmically
6. Spectrum Zoom Direction :
Select the zoomable direction of the amplitude spectrum from the X direction (frequency) or Y direction (amplitude).
(For ease of use, we have made it possible to zoom only in the selected direction.)
7. Peak Hold :
Displays the results of holding the past maximum values (peak values)