# RTA Audio

> Real-time audio analyzer with recording, visualization, and export capabilities. (iPhone/iPad app by New Ball s.r.o..)

- Source: https://appshunter.io/ios/app/rta-audio/id525324684 (this page in markdown: same URL + `.md`)
- Developer: [New Ball s.r.o.](https://appshunter.io/developer/1178970340)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 3.60/5 from 31 App Store ratings · 40 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 2 MB
- Languages: American English
- Released: 2012-05-11
- Data updated: 2026-08-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/rta-audio/id525324684/reviews.md

## What is RTA Audio?

RTA Audio

Realtime analyzer with recording and Visualizer module with export.

••• Realtime analyzer •••

Realtime analyzer gives you the ability to analyze realtime audio input (built-in microphone or external audio accessory inputs) using Fast Fourier Transform with selected window function. You can also record the input for future offline processing or export.

••• Visualizer •••

This module presents you the results of offline audio analysis. Selecting previously captured recording gives the graph view, spectrogram and waveform of the audio data. Simple controls gives you the ability to play, loop, seek and change rate of the recording synchronized with analysis data presentation. Export function allows you to share or archive your analysis. Resulting PDF document contains basic recording information, spectrogram, peak & RMS graph and frequency table data with maximum peaks (with the time of the occurrence in recording) 

••• Features •••

Resolution: 1/2 - 1/96 Octave
Logarithmic frequency scale 
Fixed frequency range (20 - 20kHz)
Tone scale view C₀- H₈ (A₄ = 440Hz)
Peak hold graph
Peak average graph
RMS average graph
Pointer (watch) function
Peak and RMS input meter

••• Audio input specification •••

Audio session mode - measurement
Input gain control
Sample rate: 48000 Hz
Bit depth: Float32
Channel: 1(mono)
Frequency range: 20Hz - 20kHz
Dynamic range: -100dB - 0dB

••• FFT (Fast Fourier Transform) specification •••

Frame size: 8192
Overlap: from 60% to 90%
Smoothing Window: Bartlett-Hann, Blackman, Blackman-Harris (default), Blackman-Nuttell, Cosine, Flat Top, Gauss, Hamming, Hann, Lanczos, Nuttall, Rectangular, Triangular
Hardware acceleration

## Key features

- Real-time audio analysis (FFT)
- Recording and offline processing
- Spectrogram and waveform visualization
- Exportable analysis reports (PDF)
- Adjustable resolution and frequency scale
- Peak and RMS metering

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade to full version | $14.99 | one-time |


## Recent user reviews (10 of 40)

All indexed reviews: https://appshunter.io/ios/app/rta-audio/id525324684/reviews.md

### 5/5 — Greetings!

*2025-01-27*

How might I unlock the full version of your app? I enjoy the features I have access to, and hope to experiment with the settings more.

**Developer response:** Hello. Happy to see you’re enjoying our app. Please check the Settings tab for the upgrade.

### 5/5 — Great RTA app

*2024-12-17*

I use this app all the time to calibrate my stereo system using pink noise.  Highly recommended for anyone who is involved with audio and sound.

**Developer response:** Hello. Thanks for using our app. There’s an in-app purchase/restore available on top of the Settings tab. Check there please.

### 5/5 — Great RTA app

*2024-12-14*

I use this app all the time to calibrate my stereo system using pink noise.  I would like to unlock all the features but can’t find the full version of this app.

**Developer response:** Hello. Thanks for using our app. There’s an in-app purchase/restore available on top of the Settings tab. Check there please.

### 2/5 — Misleading

*2023-07-17*

Not free, paywall to adjust any setting.

### 5/5 — Great RTA app

*2023-01-21*

just to note: new iOS update turned off mic access and RTA Audio dodnt notifying me it needed to be turned on again. so..if yours stops working check the Settings>RTA Audio>Mic

### 4/5 — Amazing Audio Tool

*2022-05-03*

Update May 2, 2023. I have been an RTA audio user since February 13, 2017. Just recently I have found the need to update my evaluation and give the developers a chance to fix things. But overall I’m extremely pleased with how the developer has kept increasing the functionality of this great application. To this end I am submitting these areas that need to be updated and rectified.
>>>>>>>>>>>>>>>>>
iPad mini 5 generation, iOS 15.4.1, iPad 9, iOS 15.4.1, iPad 7, iOS 15.4.1. iPhone 12, iOS 15.4.1
On all iPads including the iPad mini, I am unable to export files and I am unable to delete files. Only on the iPhone 12 am I able to export a file, delete files.

Please fix these bugs, thank you.

>>>>>>>>>>>>>>>>>>

RTA audio Pro has been an amazing app. Lets you see the sounds you hear, even the low frequency ones. The only reason I don’t give it a five star review is that I can’t export what I see as a movie video.

### 5/5 — Amazing App

*2021-06-03*

Works flawlessly.

### 5/5 — Thx for s great app

*2021-05-31*

I’ve been using the app for over 2 years. I’m an audio engineer in a large mega church system. I have access to a lot of cool gear and I’m always on my iPhone as we use a group messaging app during services. And since I have my iPhone open the ease of this app is awesome. The new upgrade is a good one. This app works for me in a FOH situation every-time. Being responsible for an 1,100 seat auditorium for several services a Sunday I report back to the staff on Mondays my db levels and what frequencies were getting up there. It’s a great tool in my tool bag. Thx for the app. It works for me and our church campuses.

### 5/5 — 구매이력 확인 안되시는 분들

*2021-02-24*

화면 왼쪽 상단에 퍼체이스리스토어 버튼 누르세요

### 1/5 — 이미 아이패드에서 결제했는데

*2020-05-28*

이미 아이패드에서 결제했는데,
같은 계정 아이폰에서 왜 또 결제해야합니까?

장난하는것도 아니고,
왜 ? 두번 결제해야합니까?

I already paid it in iPad.
Why am I paid in iPhone again ?

Wtf ???

애초에 따로 Rta audio 유료버전이있다면 그거 유로로 사면 같은계정 사용하는 기기 다 사용할 수 있는데
왜 이거 유료로 결제하게 하셨는지요?

환불하고 유로버전으로 결제하게 해주십시오.

## Frequently asked questions about RTA Audio

### What does RTA Audio do?

RTA Audio is a real-time audio analyzer that allows you to analyze live audio input from your device's microphone or external accessories. It uses Fast Fourier Transform (FFT) to display frequency spectrum data and offers recording capabilities for offline analysis and export.

### What are the key features of RTA Audio?

Key features include real-time frequency analysis with selectable window functions, recording for offline processing, a visualizer module with graph and spectrogram views, and export functionality for detailed PDF reports. It also offers adjustable resolution, logarithmic frequency scales, and various audio input specifications.

### How much does RTA Audio cost?

The application is free to download and use, but it offers in-app purchases for additional features or functionality. Specific pricing for these in-app purchases can be found within the app itself.

### What kind of audio input does the app support?

The app supports real-time audio analysis using the built-in microphone or external audio accessory inputs. It operates in measurement audio session mode with adjustable input gain, a sample rate of 48000 Hz, 32-bit float bit depth, and mono channel input.

### What are common use cases for RTA Audio?

Common use cases include analyzing the frequency response of musical instruments, troubleshooting audio system issues, visualizing soundscapes, and archiving audio analysis data for professional or personal projects. It's useful for anyone needing to understand the spectral content of audio.

## Version history (last 5 releases)

### 3.2 — 2024-11-12

Bug fix release. Fixing the crash opportunity in the app's lifecycle switching.

### 3.1 — 2021-06-03

* Fixes crash on receiving phone calls.
* Fixes crash on Frequency watcher upper bound.
* Disables navigation during recording and visualizer analysis.
* Minor fixes.

### 3.0.1 — 2021-05-30

Complete rewrite of the application using Swift & SwiftUI.
New audio recording function with export (WAV).
New visualizer module with export (PDF).
Extended window functions set.
External input/output audio device support (tested with Focusrite iTrack Solo).
Bluetooth input/output audio device support.
Compute frequency selection (overlap).

### 2.0.3 — 2019-01-26

FIX microphone access problem. 
Minor updates.

### 2.0.2 — 2015-09-23

• configuration setting auto update
• minor visual changes

## Apps similar to RTA Audio

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| --- | --- | --- | --- |
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## More apps by New Ball s.r.o.

- [Trusted image](https://appshunter.io/ios/app/trusted-image/id1448694634)

All apps by New Ball s.r.o.: https://appshunter.io/developer/1178970340

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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 2026-08-23.*