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RTA

RTA

Real Time Analyzer

27 ratings
118 reviews
๐Ÿ”ง Utilities
๐ŸŽต Music
$4.99
In-App Purchases

Details

Released
December 14, 2008
Updated
October 20, 2026

Features

Developer

Andrew Smith
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RTA video #1 for iPhone
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RTA screenshot #3 for iPhone
RTA screenshot #4 for iPhone
RTA screenshot #5 for iPhone
RTA screenshot #6 for iPhone
iphone
ipad
๐Ÿงพ$9.99
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About

Analyze audio frequencies, test speakers, and tune rooms with this professional-grade acoustical analysis tool. It offers octave and 1/3 octave modes, peak hold, and averaging, with automatic microphone compensation for accurate results.

โœ“Real-time acoustical analysis
โœ“Octave and 1/3 Octave modes
โœ“Peak Hold and Average modes
โœ“Automatic microphone compensation
โœ“Save, recall, and export graphs
โœ“Interactive touch GUI
โœ“Noise curve overlays
Show original description

What users say about RTA

Reviews of RTA are mixed: the Music app is rated 4.0/5 from 27 App Store ratings. What users like most: easy to use, good for quick analysis. Top complaints: crashes frequently, freezes often. Summarized from real user reviews.

Positive things

  • ๐Ÿ‘Easy to use
  • ๐Ÿ‘Good for quick analysis
  • ๐Ÿ‘Accurate for price
  • ๐Ÿ‘Useful for tuning
  • ๐Ÿ‘Professional tool
  • ๐Ÿ‘Good value
  • ๐Ÿ‘Handy tool
  • ๐Ÿ‘Straightforward
  • ๐Ÿ‘Works well
  • ๐Ÿ‘Great for live sound
  • ๐Ÿ‘Saves time
  • ๐Ÿ‘Helpful for feedback
  • ๐Ÿ‘Good for room EQ
  • ๐Ÿ‘Accurate comparison
  • ๐Ÿ‘Informative

Negative things

  • ๐Ÿ›Crashes frequently
  • ๐Ÿ›Freezes often
  • ๐Ÿ›Incompatible with iOS updates
  • ๐Ÿ›Screen display issues
  • ๐Ÿ›Battery drain
  • ๐Ÿ›Not accurate for fine tuning
  • ๐Ÿ›Limited frequency resolution
  • ๐Ÿ›Poor external mic support
  • ๐Ÿ›Not updated for newer devices
  • ๐Ÿ›Calibration issues
  • ๐Ÿ›Slow refresh rate
See all reviews

What's New in RTA

11.12

October 20, 2026

New in this release: - Ready for iPhone Duo: every screen adapts to closed, open, book and tent, with controls in the side strip. - iOS 26 appearance adopted. - Bug fixes and stability improvements

More
2

Subscriptions & In-App Purchases

$9.99

STC -- Transmission Loss

STC -- Transmission Loss

User reviews

Most RecentHighest RatedLowest Rated

Please revert to previous release or use correct source code.

The previous update was worse than the any of the other versions. It would not display in portrait mode and the dB display was not showing the actual measurement.

The developer was very quick to resolve the software issue and it now works as expected.
NNahKaw

What happened after the last update

Screen just panoramic, calibration wrong , iphone 13pro
00axt15

Response from developer

New upload pending, please send tech support requests to support@studiosixdigital.com

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What a huge help this app is

Used with iPad mini. Ran pink noise to do the best I could to flatten the sound. What a difference this made! I can see areas that need improvement but I need DSP. For now this works! Thank you
SSpeedn20

Actualizar la appยกยกยกยก

Mi iPad se actualizรณ sola a iOS 18 y ya no funciona la App
โ€ฆโ€ฆ.567
See 113 more reviews

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User experience

๐Ÿž

Reported Bugs

18 issues

App crashes after iOS updates (iOS 13, 15, 16, 17, 18)

Bug

App freezes or crashes on startup

Bug

App only displays half the screen

Bug

App does not save analysis readings to photo roll

Bug

App stops working on older iPads after updates

Bug

Accessory found/removed loop with iTestMic 2

Bug

App continues to run in background, draining battery

Bug

Calibration not supported for specific iPad models

Bug

App not installing after purchase/update

Bug

App not opening on iPhone 4 after update

Bug

dB/input level is useless after update

Bug

Screen not expanding after updates

Bug

App not compatible with iOS 7

Bug

App crashes when saving screen

Bug

App not working with iMM-6 microphone

Bug

App overcompensates for low frequencies

Bug

App crashes on 3G S after update

Bug

Low frequency response cut due to voice recognition

Bug
โœจ

Requested Features

8 requests

Add German language support

Feature

Add NC and NR curves

Feature

Make background mode optional

Feature

Improve compatibility with newer iOS versions

Feature

Add option to overlay readings

Feature

Add zoom functionality for frequencies

Feature

Improve calibration for external mics

Feature

Add pink noise output

Feature

FAQ

What does the RTA app do?

This app functions as a professional-grade real-time analyzer for acoustical analysis. It allows you to test speakers, tune rooms, and gain a better understanding of audio frequencies. The filters meet or exceed ANSI and IEC Class 1 specifications.

What are the key features of the RTA app?

Key features include Octave and 1/3 Octave modes with selectable decay times, Peak Hold and true linear Average modes, automatic microphone compensation for iOS devices, and the ability to save, recall, and export graphs. It also has an interactive touch GUI and optional noise curve overlays.

How much does the RTA app cost?

The app is free to download and use with its core functionalities. Additional professional features and capabilities may be available through in-app purchases, allowing users to upgrade for enhanced performance and accuracy.

What devices is the RTA app compatible with?

The app is designed for the iPhone, iPad, and iPod Touch. It analyzes and compensates for the internal microphones of various iOS devices, ensuring reliable results. For professional-grade accuracy, it can also be used with external professional test and measurement microphones.

What are common use cases for the RTA app?

Common use cases include tuning home theater systems, analyzing the acoustics of recording studios or listening rooms, testing speaker performance, and performing general acoustical analysis work. It's also useful for quickly assessing noise levels in different environments.