# Audio Spectrum Analyzer dB RTA — Sound frequency, decibel meter > Advanced audio spectrum analyzer and sound level meter for frequency and decibel analysis. (iPhone/iPad app by Marina Polyanskaya.) - Source: https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790 (this page in markdown: same URL + `.md`) - Developer: [Marina Polyanskaya](https://appshunter.io/developer/1519482916) - Category: Music, Utilities - Price: Free with in-app purchases - Rating: 4.50/5 from 3,042 App Store ratings · 484 written reviews indexed - Age rating: 4+ - Requires: iOS 15 · 24 MB - Languages: Russian, Vietnamese, American English, European Spanish, Italian, German (Germany), Chinese (Traditional, Taiwan), Chinese (Simplified, China), French (France) - Released: 2017-09-28 - Data updated: 2026-08-25 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790/reviews.md ## What is Audio Spectrum Analyzer dB RTA? Spectrum Analyzer is full of fantastic advanced features you won’t find elsewhere easily! This app offers a fast and accurate spectrum analysis suitable for both amateur hi-fi enthusiasts and professional A/V engineers. This incredibly precise, pro level tool is perfect for tuning your home cinema, car stereo, subwoofers, and more. Spectrum analyser gives insight into your sounds and deconstructs the audio spectrum, showing the levels of the various frequencies in your audio signal. The built-in sound meter provides high-quality measurement results when measuring ambient noise levels in a multitude of real-life scenarios. Features include- ● Octave Band Real-Time Analyzer ● FFT Plot - Fast Fourier Transform ● Smooth HD Graphics ● Multispectral Harmonic Analyzer ● Integrated Sound Level Meter (dB-A weighted) FFT Features ● FFT size from 256 to incredible 16384 ● Hold Max and (unique feature) Min peaks ● Linear and Logarithm scales ● Various window functions: Rectangle, Hanning, Hamming, Tukey, Cosine, Lanczos, Blackman ● Max frequency live tracking ● Selected frequency live tracking ● Fullscreen mode Octave RTA features ● Bars and unique spline plot modes ● Full, 1/3, 1/6 octave modes ● Hold max mode ● Selected bar tracking. And much more... Please feel free to contact us with any questions, problems or ideas via e-mail support@lspapps.com. Privacy Policy - https://www.iubenda.com/privacy-policy/42622625 Terms of Use https://www.iubenda.com/terms-and-conditions/42622625 ## Key features - Octave Band Real-Time Analyzer - FFT Plot - Fast Fourier Transform - Integrated Sound Level Meter (dB-A) - Multispectral Harmonic Analyzer - Hold Max and Min Peaks - Various Window Functions ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Access | $1.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Spectrum Analyzer Pro | $7.99 | one-time | ## What do users think of Audio Spectrum Analyzer dB RTA? Overall sentiment: neutral **Pros** - 🚀 Excellent audio analysis tool - 👍 Clean and intuitive interface - 💡 Customizable frequency range - 🔍 Accurate real-time spectrum visualization **Cons** - 🐛 Compatibility issues with newer iOS versions - 🔁 Constant prompts to upgrade to Pro version - 🔌 High battery consumption - 📊 Inaccurate frequency tracking in some modes **Commonly reported bugs** - Freezing and crashing on certain devices - Incorrect frequency readings in Octave RTA mode - Inability to switch between microphone sources **Most requested features** - External microphone support - Ability to save and compare measurement results - More detailed instructions and tutorials - Vertical orientation option ## Recent user reviews (10 of 484) All indexed reviews: https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790/reviews.md ### 5/5 — Very good app and free *2026-07-09, version 2.3* Perfect RTA for working out any audio/studio to mix/EQ/stage for the best quality of sound. It’s free, no ads besides a built-in popup every now and then. Very customizable and accurate readings based on multiple FFT size choices ### 1/5 — Не работает *2026-06-18, version 2.3* Не работает приложение, не показывается ни одна кнопка, только фон сиреневый. ### 1/5 — 爛透了 *2026-04-07, version 2.3* 拉 ### 1/5 — Nur kostenpflichtig! *2026-03-21* Laut AppStore angeblich keine InApp-Käufe aber ohne ein Kostenpflichtigen 3-Tages-Test oder Einmalkauf für 8,99 nicht verwendbar! ### 1/5 — Nicht seriös *2026-03-12, version 2.3* Im AppStore wird vorgegaukelt, dass es eine kostenlose Version gibt - totaler Unsinn, bis man die App das erste Mal öffnet: da habe ich die Wahl zwischen Pest und Cholera. Bei solchem Gebaren interessiert mich auch keine 3tägige Testdauer - gleich wieder deinstalliert und in der persönlichen „Blacklist“ notiert. ### 1/5 — >:( *2026-03-10, version 2.3* I, unlike the countless other people who reviewed this, have not liked this app. As far as I’m able to tell, I’m trying to look at waveforms from imported music and that’s impossible. Plus, the cover image? Why? WHY!? I’m a trypophobic person and that thumbnail disturbs me. ### 1/5 — Es de pago *2026-01-08, version 2.3* No pone nada al descargar pero apenas la abres tienes que pagar si quieres usarla. Ni siquiera dan una vez de prueba. Dudo que funcione si van así ### 1/5 — Не работает на iPhone 11. (iOS: 26.1.) *2025-11-29* Не работает на iPhone 11. (iOS: 26.1.) Последняя версия iOS. Пожалуйста решите ошибку. Куплена PRO версия. А приложение не грузится. Пробовал переустанавливать, но не помогло. Буду ждать рабочее приложение. С уважением, Александр. 🤝 ### 1/5 — Took over phone *2025-10-17, version 2.3* App took over phone and offered no way to close. Had to lock, and click on a notification from a different app to get access to anything other than this app. ### 5/5 — Fabulous *2025-09-30, version 2.3* Great app. Works a treat! ## Frequently asked questions about Audio Spectrum Analyzer dB RTA ### What does the Audio Spectrum Analyzer dB RTA app do? This app provides advanced audio spectrum analysis and sound level metering. It helps users understand the frequency distribution and decibel levels within an audio signal, making it useful for tuning audio systems and measuring ambient noise. ### What are the key features of this spectrum analyzer? Key features include an Octave Band Real-Time Analyzer, FFT Plot for Fast Fourier Transform analysis, an integrated Sound Level Meter with dB-A weighting, and a Multispectral Harmonic Analyzer. It also offers advanced FFT settings like adjustable size, peak hold, and various window functions. ### Is this app free to use? The app is free to download and use, but it offers in-app purchases. This means certain advanced features or functionalities may require a purchase to unlock. ### Who would benefit from using this app? This app is designed for a range of users, including amateur hi-fi enthusiasts, professional A/V engineers, and anyone looking to tune their home cinema, car stereo, or subwoofers. It's also useful for measuring ambient noise levels in various real-life scenarios. ### What kind of audio analysis can I perform with this app? You can perform detailed audio analysis including real-time spectrum analysis with octave band modes (full, 1/3, 1/6), Fast Fourier Transform (FFT) analysis with adjustable parameters, and sound level measurements. The app can also track maximum and minimum frequency peaks and display harmonic analysis. ## Version history (last 5 releases) ### 2.3 — 2025-09-29 • iOS 26 support ### 2.2.2 — 2025-04-15 - iOS 18.4 full support - Bugfixes - Stability improvements ### 2.2.1 — 2021-05-20 - Minor bugfixes. Please be sure to rate this new version on the App Store and leave a review. Your feedback is greatly appreciated and helps me continue updating Spectrum Analyzer. ### 2.2 — 2021-05-15 - New calibration profiles for the latest iOS version Please be sure to rate this new version on the App Store and leave a review. Your feedback is greatly appreciated and helps me continue updating Spectrum Analyzer. ### 2.1.1 — 2018-08-03 This app has been updated by Apple to display the Apple Watch app icon. • With the previous version I fix a lot of old bugs but add some new. This version fixes all newly added. Now the app is stable. Sorry for inconvenience. Please be sure to rate this new version on the App Store and leave a review. Your feedback is greatly appreciated and helps me continue updating Spectrum Analyzer! ## Apps similar to Audio Spectrum Analyzer dB RTA | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sound Decibel Meter-NIOSH,OSHA](https://appshunter.io/ios/app/sound-decibel-meter-nioshosha/id1571075296) | 4.5 (335) | Free | Music | | [Spectrum Analyzer: Spectrogram](https://appshunter.io/ios/app/spectrum-analyzer-spectrogram/id981810895) | 4.2 (195) | Free | Music | | [Decibel meter for personal use](https://appshunter.io/ios/app/decibel-meter-for-personal-use/id6448749318) | 4.5 (28) | Free | Music | | [Bass Tester & Booster Pro](https://appshunter.io/ios/app/bass-tester-and-booster-pro/id941024213) | 3.9 (225) | Free | Music | | [AudioTools, dB, Sound & Audio](https://appshunter.io/ios/app/audiotools-db-sound-and-audio/id325307477) | 4.8 (5,060) | $19.99 | Music | | [Audio Spectrum Analyzer Pro](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806) | 4.4 (238) | Free | Music | ## More apps by Marina Polyanskaya - [Light Meter - lux and foot candle measurement tool](https://appshunter.io/ios/app/light-meter-lux-and-foot-candle-measurement-tool/id1037610013) - [dB Decibel Meter - sound level measurement tool](https://appshunter.io/ios/app/db-decibel-meter-sound-level-measurement-tool/id1048388627) - [Audio spectrum analyzer EQ Rta](https://appshunter.io/ios/app/audio-spectrum-analyzer-eq-rta/id1122398778) - [Octave Band Real Time Frequency Analyzer and Sound Level Meter](https://appshunter.io/ios/app/octave-band-real-time-frequency-analyzer-and-sound-level-meter/id1130237143) - [Lux Light Meter Pro](https://appshunter.io/ios/app/lux-light-meter-pro/id1292598866) All apps by Marina Polyanskaya: https://appshunter.io/developer/1519482916 ## Related topics [audio spectrum analyzer db rta](https://appshunter.io/ios/topics/audio-spectrum-analyzer-db-rta) · [audio analyzer rta](https://appshunter.io/ios/topics/audio-analyzer-rta) · [car audio tuning](https://appshunter.io/ios/topics/car-audio-tuning) · [audio spectrum analyzer pro](https://appshunter.io/ios/topics/audio-spectrum-analyzer-pro) · [audio spectrum analyzer eq rta](https://appshunter.io/ios/topics/audio-spectrum-analyzer-eq-rta) · [spectre analyzer for logic pro](https://appshunter.io/ios/topics/spectre-analyzer-for-logic-pro) · [audio spectrum analyzer free](https://appshunter.io/ios/topics/audio-spectrum-analyzer-free) · [audio tool](https://appshunter.io/ios/topics/audio-tool) · [spectrum analyzer audio](https://appshunter.io/ios/topics/spectrum-analyzer-audio) · [rta audio](https://appshunter.io/ios/topics/rta-audio) · [music analyzer](https://appshunter.io/ios/topics/music-analyzer) · [frequency meter pro](https://appshunter.io/ios/topics/frequency-meter-pro) · [sound spectrum analyzer](https://appshunter.io/ios/topics/sound-spectrum-analyzer) · [audio analysis](https://appshunter.io/ios/topics/audio-analysis) · [spectrum analyzer](https://appshunter.io/ios/topics/spectrum-analyzer) · [audio tools](https://appshunter.io/ios/topics/audio-tools) · [sound frequency analyzer](https://appshunter.io/ios/topics/sound-frequency-analyzer) · [sound wave reader](https://appshunter.io/ios/topics/sound-wave-reader) · [rta audio tool](https://appshunter.io/ios/topics/rta-audio-tool) · [audio frequency analyzer](https://appshunter.io/ios/topics/audio-frequency-analyzer) --- *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 2026-08-25.*