# Audio spectrum analyzer EQ Rta — Sound frequency, decibel meter

> Real-time audio spectrum analyzer and decibel meter for sound analysis. (iPhone/iPad app by Marina Polyanskaya.)

- Source: https://appshunter.io/ios/app/audio-spectrum-analyzer-eq-rta/id1122398778 (this page in markdown: same URL + `.md`)
- Developer: [Marina Polyanskaya](https://appshunter.io/developer/1519482916)
- Category: Productivity, Utilities
- Price: $3.99
- Rating: 4.50/5 from 245 App Store ratings · 80 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.2 · 18 MB
- Languages: American English, French (France), German (Germany), Italian, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan), Vietnamese
- Released: 2016-06-24
- Data updated: 2026-08-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/audio-spectrum-analyzer-eq-rta/id1122398778/reviews.md

## What is Audio spectrum analyzer EQ Rta?

Spectrum Analyzer is a powerful real-time audio analysis app. Ideal for room tuning or speaker tuning, this app provides precision audio measurement and visualization that fits in your pocket!

Spectrum Analyzer has many advanced features which are normally only found in much more expensive sound analysis software. It offers fast and accurate spectrum analysis suitable for both amateur hi-fi enthusiasts and professional A/V engineers.

Feature Highlights: 
● Octave Band Real-Time Analyzer 
● FFT Plot
● Smooth HD Graphics
● Multispectral Harmonic Analyzer
● Integrated Sound Level Meter (dB-A weightnings)
● Up to 16384 FFT size
● Various window functions
● Spectrogram mode

Have any questions? Contact us at lspappscare@gmail.com

## Key features

- Octave Band Real-Time Analyzer
- FFT Plot
- Smooth HD Graphics
- Multispectral Harmonic Analyzer
- Integrated Sound Level Meter
- High FFT Size
- Spectrogram Mode

## What do users think of Audio spectrum analyzer EQ Rta?

Overall sentiment: negative

**Pros**

- 👍 Well-designed interface
- 👍 Useful for musicians
- 👍 Good for casual use
- 👍 Accurate for basic analysis
- 👍 Replaces expensive equipment
- 👍 Clear FFT display
- 👍 Real-time analysis
- 👍 Good value for price

**Cons**

- 🐛 Does not work on newer iOS
- 🐛 Freezes frequently
- 🐛 Unresponsive graphs
- 🐛 No instructions
- 🐛 Help section shows errors
- 🐛 Paid but not working
- 🐛 Spectrum not showing changes
- 🐛 Bars get stuck
- 🐛 Inaccurate readings
- 🐛 Random graph responses
- 🐛 Delayed display
- 🐛 Not enough bands
- 🐛 Lacks calibration
- 🐛 No subsonic range
- 🐛 No detailed bass analysis
- 🐛 No detailed treble analysis
- 🐛 Slow reaction time
- 🐛 No zoom function
- 🐛 No external microphone calibration
- 🐛 No AUv3 support
- 🐛 No peak hold reset
- 🐛 No weighting filters for SPL
- 🐛 No image export
- 🐛 Annoying pop-ups
- 🐛 No differentiation below 200Hz
- 🐛 Inconsistent dB readings
- 🐛 Error in help section encoding

**Commonly reported bugs**

- Does not work with iPad Pro M4 and iOS 18
- Freezes all the time on newer iOS versions
- Does not respond correctly on newer iOS
- Does not work on iPhone 11
- HELP in app doesn't work, showing ERROR
- Not working on iPhone 13 Pro Max
- Froze up, did not work
- On iOS 16, errors, almost not working
- Does not work on iPhone 14 iOS 17.1.1
- Does not appear to show spectral changes
- Bars sometimes move, sometimes don't, get stuck
- Does not work on iPad
- Not working smoothly on iOS 16.3
- Display not timely
- Doesn't work on iPhone 14Pro, latest iOS
- Works on older iPad, not on iPhone
- Shows only nonsense and freezes constantly
- Not usable after iOS 16 update
- Broken as of January 2023
- Sensitivity very low or very slow on iOS 16.2
- App crashes constantly at granular sampling settings
- Graphs unresponsive at lower sampling rates
- Spectrograph doesn't work anymore
- Whole app is useless on iPhone 14
- No input even with microphone access enabled on iOS 16
- Not working in iPhone 13
- App works only with delayed fake data on iOS 16.x
- Don't work on iPhone 12 Pro Max, iPhone 14 pro max, ios15 and ios16
- Erroneous readings, unstable, inaccurate
- Does not open on iOS 10 on an iPhone 6
- No information below 70 hertz
- Cannot select a reading below 50 Hz
- Same problem at the upper end of the audible range
- Measurement results do not match the standard
- Very slow reaction
- No differentiation below 200Hz
- Decibel meter shows 40dB in silence in Octave RTA, but 20dB in FFT Plot with same A curve
- Help section has incorrect encoding, text in hieroglyphs

**Most requested features**

- Fix for newer iOS versions
- Add instructions
- Fix help section
- Add refund option
- Add zoom function
- Add external microphone level data correction
- Add AUv3 support
- Add peak hold release/reset button
- Add switchable weighting filters (dB C, dB Z)
- Add ability to capture & export images
- Prevent phone from turning off while using app
- Add quarter tones
- Add manual calibration setting
- Add time-based filter
- Add more bands for detailed info
- Add calibration function
- Add subsonic range display
- Add detailed bass and treble analysis
- Add scale adjustment for vertical and horizontal axes
- Improve reaction time
- Add peak hold reset button
- Add dB C and dB Z weighting filters
- Add image export functionality

## Recent user reviews (10 of 80)

All indexed reviews: https://appshunter.io/ios/app/audio-spectrum-analyzer-eq-rta/id1122398778/reviews.md

### 1/5 — 骗子

*2025-09-19*

ios26购买安装后不能用

### 1/5 — No longer working…

*2025-05-14, version 2.2.1*

Was a good app until iPad was upgraded. Does not work with iPad Pro M4 and iOS 18.

### 1/5 — Used to Work. Cannot Recommend

*2025-04-03*

Seems like newer IOS versions have rendered this app useless. For some reason it does not respond correctly and freezes all the tome. Sadly, look elsewhere for a FFT analyzer. This app used to be fantastic. Please fix this app!

### 1/5 — Not recommended

*2025-03-14, version 2.2.1*

No instructions , confusion

### 4/5 — I can't use

*2025-03-01*

please update, thanks

### 1/5 — Doesn’t work for my Iphone 11

*2024-07-05, version 2.2.1*

Paid but im not happy. It may be my phone but i would like a refund. I dont need access to this app if it doesn’t work for me. Thanks.

### 1/5 — No help for this app

*2024-04-21*

The HELP in app doesn’t work, showing ERROR on screen. No explanation what is what and how it works. Waist of money…

### 1/5 — 엉터리 앱임

*2024-03-27*

완전 엉터리 앱임 낚이지 마세요.

### 3/5 — Bp

*2024-02-10*

Not working on iPhone 13 Pro max

### 1/5 — Essentially did not work for me at all.

*2024-01-27*

Did not work. Froze up. Even when it looked like it was working, did not change even with radical changes to my eq.

## Frequently asked questions about Audio spectrum analyzer EQ Rta

### What does the Audio Spectrum Analyzer EQ Rta app do?

This app functions as a powerful real-time audio analysis tool. It measures and visualizes sound frequencies and decibel levels, making it ideal for tasks like room tuning or speaker calibration.

### What are the key features of this audio analysis app?

Key features include an Octave Band Real-Time Analyzer, FFT Plot, Smooth HD Graphics, Multispectral Harmonic Analyzer, and an Integrated Sound Level Meter with dB-A weightings. It also supports a high FFT size and offers a Spectrogram mode.

### Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, indicating it is a completely free tool for users.

### Who would benefit from using this spectrum analyzer app?

The app is designed for both amateur hi-fi enthusiasts and professional A/V engineers. Anyone involved in audio setup, room acoustics, or speaker tuning will find its precision measurement capabilities useful.

## Version history (last 5 releases)

### 2.2.1 — 2021-05-18

- Minor bugfixes

### 2.2 — 2021-05-15

- New calibration profiles with support of the latest iOS version.

### 2.1.1 — 2018-08-07

This app has been updated by Apple to display the Apple Watch app icon.

• Fixes of all known bugs

Please be sure to rate this new version on the App Store and leave a review.
Your feedback is greatly appreciated and helps us continue updating Spectrum Analyzer!

### 2.0.1 — 2018-07-19

• Icon Fix
• Brand new mode: Spectrogram
• Fixed bug with selecting band in octave band RTA mode & with splines

Please be sure to rate this new version on the App Store and leave a review.
Your feedback is greatly appreciated and helps us continue updating Spectrum Analyzer!

### 2.0 — 2018-07-18

• Brand new mode: Spectrogram
• Fixed bug with selecting band in octave band RTA mode
• Stability improvements

Please be sure to rate this new version on the App Store and leave a review.
Your feedback is greatly appreciated and helps us continue updating Spectrum Analyzer!

## Apps similar to Audio spectrum analyzer EQ Rta

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Decibel: Sound Level Meter](https://appshunter.io/ios/app/decibel-sound-level-meter/id1624742896) | 5.0 (5) | Free | Productivity |
| [DB-Decibel sound level meter](https://appshunter.io/ios/app/db-decibel-sound-level-meter/id6449352632) | 4.5 (33) | Free | Productivity |
| [Decibel Meter Sound Detector](https://appshunter.io/ios/app/decibel-meter-sound-detector/id1254994873) | 4.7 (54,030) | Free | Productivity |
| [Decibel Sound Meter: dB SPL](https://appshunter.io/ios/app/decibel-sound-meter-db-spl/id1501310833) | 5.0 (3) | Free | Productivity |
| [Sound Meter: db Level Measure](https://appshunter.io/ios/app/sound-meter-db-level-measure/id1490688310) | 5.0 (1) | Free | Productivity |
| [Frequency Generator & Hz Tone](https://appshunter.io/ios/app/frequency-generator-and-hz-tone/id6532621028) | 4.6 (24) | Free | Productivity |

## 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)
- [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)
- [Audio Spectrum Analyzer dB RTA](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790)
- [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 eq rta](https://appshunter.io/ios/topics/audio-spectrum-analyzer-eq-rta) · [audio analyzer rta](https://appshunter.io/ios/topics/audio-analyzer-rta) · [eq frequency](https://appshunter.io/ios/topics/eq-frequency) · [audio analysis](https://appshunter.io/ios/topics/audio-analysis) · [sonarroom audio analysis tool](https://appshunter.io/ios/topics/sonarroom-audio-analysis-tool)

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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 2026-08-25.*