# Sound Spectrum Pro — The complete sound package

> Advanced audio analysis and signal generation tools for sound professionals. (iPhone/iPad app by Calin Andrian Albescu.)

- Source: https://appshunter.io/ios/app/sound-spectrum-pro/id1632089486 (this page in markdown: same URL + `.md`)
- Developer: [Calin Andrian Albescu](https://appshunter.io/developer/1632089488)
- Category: Music
- Price: $12.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 1 MB
- Languages: American English
- Released: 2022-07-03
- Data updated: 2026-08-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sound-spectrum-pro/id1632089486/reviews.md

## What is Sound Spectrum Pro?

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.

== Features ==

+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Noise Criterion and Noise Rating in octave RTA.
+ Equivalent continuous sound level LAeq, LCeq, LZeq, LAeq15, LAeq60.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ THD+N Total Harmonic Distortion plus Noise 
+ Lightning-fast FFT with size from 16k to 1M, providing frequency resolution of 0.05Hz directly and 0.01Hz with downsampling.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Peak and valley hold with adjustable decay.
+ Highest peak display
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ No ads!

## Key features

- Real-Time Analyzer (RTA)
- Fast Fourier Transform (FFT) display
- Sound pressure level (SPL) measurements
- Signal generators (tone, noise, sweeps)
- Impulse response and RT60 measurement
- Calibration capabilities
- Pan and zoom functionality

## Chart rankings

- #197 in Top Paid · Music (US App Store)


## Frequently asked questions about Sound Spectrum Pro

### What is Sound Spectrum Pro used for?

Sound Spectrum Pro is used for advanced audio analysis, offering tools like Real-Time Analyzer (RTA) and Fast Fourier Transform (FFT) displays. It also includes signal generators and measurement capabilities for detailed sound evaluation.

### Does Sound Spectrum Pro have ads?

No, Sound Spectrum Pro is ad-free, providing an uninterrupted user experience for all its audio analysis features.

### What devices is Sound Spectrum Pro compatible with?

Sound Spectrum Pro is available for iPhone, iPad, and iPod devices, offering its full suite of features across Apple's mobile ecosystem.

### How much does Sound Spectrum Pro cost?

Sound Spectrum Pro is a paid application, available for a one-time purchase of $12.99.

### What kind of audio analysis does Sound Spectrum Pro offer?

It offers octave, 1/3 octave, and down to 1/24 octave RTA, as well as FFT amplitude displays. It also measures sound pressure levels in dBA, dBC, and dBZ, and calculates Noise Criterion and Noise Rating.

### Can Sound Spectrum Pro generate audio signals?

Yes, Sound Spectrum Pro includes signal generators for tone, white noise, white sweep, pink noise, pink sweep, pink octave, and pink 1/3 octave signals.

### How often is Sound Spectrum Pro updated?

The latest version, 2.0.6, was released on July 1, 2023, indicating regular updates to improve functionality and compatibility.

### What is the age rating for Sound Spectrum Pro?

Sound Spectrum Pro has an age rating of 4+, making it suitable for a wide range of users interested in audio analysis.

## Version history (last 4 releases)

### 2.0.6 — 2023-07-01

Bug fixes and minor improvements

### 2.0.5 — 2022-07-21

Minor fixes and improvements

### 2.04 — 2022-07-12

Performance improvements

### 2.03 — 2022-07-03

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-09.*