Last 30 days
Last 30 days
Avg per download
26 reviews
Last 30 days
Last 30 days
Avg rev. per download
26 reviews
Performance Insights
Competition level
Low competitionUnder 100K on both downloads and revenue — the kind of niche a small team can still take.
On the store
Released December 2008 · 73 releases since
RTA is an iOS app ($4.99) by Andrew Smith in the mobile app category. It holds a 4.0-star rating.
- Monetizes through in-app purchases priced at $9.99.
- Ships new versions roughly quarterly.
- Latest version is 11.9, released August 11, 2026.
- 56% of ratings are five-star.
- Available in 8 languages.
- Strongest in US, FR, IT.
- Downloads at 29.1 MB and requires iOS 15.0+.
- Rated 4+.
App details
- Version
- 11.9
- Release status
- Worldwide
- Age rating
- 4+
- Requires
- iOS 15.0+
- Size
- 29.1 MB
- Languages
- English, French, German, Japanese, Polish, Chinese, Spanish, Swedish
- Price
- $4.99
- First seen
- December 2008
- Top markets
- US, FR, IT
- Publisher country
- US
- Website
- Visit website
- Support
- Visit support
Release history
73 versions tracked
- Version 11.9Latest
- Version 11.8
- Version 11.7
- Version 11.6
- Version 11.5
- Version 11.4
- Version 11.3
- Version 11.2
- Version 11.1
- Version 11.0
- Version 10.5
- Version 10.4
Ships roughly quarterly.
In-app purchases
2 products · United States
- Reference Curve FilesOne-time$9.99
- STC -- Transmission LossOne-time$9.99
What users say
- 4.0
How accurate?
How accurate is this compare to a calibrated measuring mic? My goal is to EQ my room to have a flat response. I have an iPhone XS Max.
Reviewed on version 9.6
- 5.0
The best iOS RTA
Ignore all of the rest of them because this one is actually calibrated for your iOS device. I tried other apps setting up my vehicle and this one is obviously accurate. After about 10 minutes of tweaking the EQ on my head unit my new speakers sound 1 million times better. If you have a hard time setting your EQ to sound good this one will get you there.
Reviewed on version 10.5
- 5.0
Super RTA!!!
I use this app at least 8 days a week! When the new iOS update came out the app was having problems fitting the screen. Everything still worked as expected, just smaller. I emailed the developer about the issue and had a response in 5 minutes! That is customer support if over seen it. In the response I was assured the new update is awaiting approval from Apple. Thanks Andrew for keeping us all afloat.
Reviewed on version 9.3
About RTA
2,743 characters
A Real Time Analyzer for the iPhone, iPad and iPod Touch. Test your speakers, tune your room, do acoustical analysis work or just have a better understanding of audio frequencies. RTA is a professional-grade acoustical analysis tool. All filters meet or exceed ANSI and IEC Class 1 specifications.
Includes Octave and 1/3 Octave modes, with selectable decay times, as well as Peak Hold and true linear Average mode.
*** iOS Microphones
We have analyzied every iOS device, including all of the iPads, all iPhones, and iPod touches, and have created microphone compensation files that are applied automatically. You can trust the results you are getting, often within just a few dB of a far more expensive analyzer. Calibration is updated regularly, automatically, from our cloud-based calibration database.
Upgrade to our iTestMic or iAudioInterface2 to bring your system up to full professional specs.
*** Save and Recall Graphs
You can save and recall graphs, marked with the GPS location, date & time, and your comment, as well as store the image to your photo roll.
Export the data as an XLS formatted file to your computer for inclusion in reports or further analysis.
*** Max and Min Bars
You can also turn on resettable Max/Min bars (see image #4) to capture peaks. Double-tap to reset the bars.
*** Specifications and Devices
The internal iPhone mic has a noise floor near 30 dB, and if your are running iOS 6, clips around 120 dB.
*** Touch GUI
Fully interactive touch GUI features includes scroll up/down, pinch to zoom or compress the vertical dB scale, or swipe horizontally to get a cursor that reads out the exact dB level and frequency across the screen. To make the cursor disappear, swipe it off the graph to the left.
The landscape-mode display flips 180 degrees so that you can face the internal mic in either direction.
*** Overlay Curves
Also included are optional noise curve overlays, in NCB, RC, PNC, NC, X-Curve and NR mode. See picture #2 for an example. Use this feature to get a quick reading on the noise levels in a room. Also includes the cinema large-room X-curve overlay.
*** Calibration
RTA can be fully calibrated, whether you are using it with the internal iOS microphone, or one of our professional test & measurement mic solutions. And, if you are using iTestMic, the mic calibration is transmitted directly to the app, so you are always calibrated.
*** RTA or FFT?
If you are wondering if you should download this app or our FFT app, check out our website, we have a page devoted to this topic.
See our other acoustics and audio apps, including AudioTools.
Screenshots
5 iPhone screenshots
RTA iOS app monetises through in-app purchases. The current products and price points are listed in the in-app purchases table on this page.
RTA iOS app is available. The app maintains a 4.0-star rating based on 26 user reviews, indicating strong user satisfaction in the mobile app market.
RTA iOS app competes actively in the mobile app category.
You can download RTA iOS app from the App Store for iOS devices, requiring iOS 15.0 or later. The app offers in-app purchases for enhanced functionality.
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