---
title: "Audio / Spectrum Analyzer - Reviews, Revenue and Downloads in Taiwan | Apple App Store"
description: "This RTA app supports simultaneous display of "Audio Waveform", as well as the FFT-based "Amplitude Spectrum" (frequency magnitude) and "Spectrogram" (frequency distribution over time), for audio sign"
---

# Audio / Spectrum Analyzer — Taiwan

![Audio / Spectrum Analyzer App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ab/68/6e/ab686eda-30f3-3081-2b19-e74d101b5722/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Loop-Sessions.LLC](https://apptail.io/developer/loop-sessionsllc-ohc)
**Category:** Music
**Rating:** 4.9/5 (66 ratings)
**Price:** Free
**Bundle ID:** com.loopsessions.AudioSpectrumAnalyzer
**Store:** Apple App Store
**Country:** Taiwan
**Version:** 2.4.0 (released 2026-06-09)
**Original Release:** 2020-05-18
**Languages:** Japanese, English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/tw/app/app/id1508848574)
**AppTail Page:** [https://apptail.io/app/app-DmO/taiwan](https://apptail.io/app/app-DmO/taiwan)

## Audio / Spectrum Analyzer Description
This RTA app supports simultaneous display of "Audio Waveform", as well as the FFT-based "Amplitude Spectrum" (frequency magnitude) and "Spectrogram" (frequency distribution over time), for audio signals input from a microphone.
(FFT: Fast Fourier Transform, RTA: Real Time Analyzer)

[Features]
- Supports simultaneous display of Waveform / Spectrum / Spectrogram.
- Supports orientation both portrait and landscape.
- Selectable configuration of Waveform / Spectrum / Spectrogram display.
- Selectable FFT size.
- Selectable window function.
- Selectable Spectrum Average.
- Selectable frequency weighting. (Flat, dBA, dBC)
- Selectable the type of expressing the X direction (frequency) of Spectrum / Spectrogram. (Linear, Log)
- Displays the peak level and its frequency of the spectrum.
- Peak Hold (displays the results of holding past peak values ​​of the spectrum).
- Octave Analysis (displays the spectrum divided into octave bands).
- Generates the audio signal (Sine, Triangle, Squire, Saw)
- Generates the noise signal (white noise, pink noise)
- Pitch meter display.


[Setting items]
1. Screen structure :
Select the display screen configuration.
View Num : 1, 2
View Type :
- 1 screen : Wave (Waveform) / 1D (Spectrum) / 2D (Spectrogram)
- 2 screens : W+1D (Waveform + Spectrum) / W+2D (Waveform + Spectrogram) / 1D+2D (Spectrum + Spectrogram)
Layout : Vertical (displayed vertically), Horizon (displayed horizontally)

2. Frequency Axis Scale Type :
Selectable the type of expressing the X direction (frequency) of Spectrum / Spectrogram.
- Linear: Distributed at equal intervals
- Log: The intervals increase logarithmically

3. FFT size :
Selectable FFT size. (number of samples used when performing FFT)
1024, 2048, 4096, 8192, 16384
(* 16384 is available in the Pro version.)

4. Window function :
Selectable window function (multiplication just before FFT) used for spectrum calculation.
Hanning, Hamming, Blackman, No window

5. Spectrum Average
Number of spectrum average for a display of spectrum.
1, 2, 4, 8 (init value: 1)
(* 4 and 8 are available in the Pro version.)
Higher value will make the spectrum less noisy and more smooth, at the cost of lower time resolution.

6. Frequency Weighting :
Selectable frequency weighting.
- Flat: No frequency weighting is applied.
- dB(A): Frequency response that takes into account human hearing.
- dB(C): Relatively flat response.

7. Peak Hold :
Displays the results of holding the past maximum values ​​(peak values) of the spectrum.

8. Octave Analysis :
Displays the results of classifying the spectrum into octave bands.
Division method:
- FFT: Spectral display
- 1/12, 1/6, 1/3, 1 octave: Display divided into octave bands
Calc method:
- Max: Displays the maximum spectrum value in each band
- Average: Displays the average spectrum value in each band

9. Generates the audio signal :
Set the audio signal to be generated.
- There are 4 types of waveform. (Sine, Triangle, Squire, Saw)
- It can set the value of the frequency in 20Hz - 20000Hz.

10. Generates the noise signal :
Set the noise signal to be generated.
- There are 2 types of noise. (White noise, pink noise)


[Other]
- Background color selection: Black, White
- WaveForm: Line Color (Green, Yellow, Invert), Line Width (1.0 ~ 5.0 px)
- Spectrum: Bar color (Green, Yellow, Colorful)
- Spectrogram: Colormap selection, Display range (-150 ~ -60 dB), Display time (4 ~ 15 sec)
- Bluetooth connection policy selection (disabled, HFP, A2DP).
- Scaling of Waveform / Spectrum display in the Y direction (magnification: 0.5 - 2.0).
- Scaling of Spectrum / Spectrogram display in the X direction (magnification: 1.0 - 16.0).


[Information]
- The vertical line spacing in the waveform display is 2 mSec.
- The calculation of spectrum and spectrogram uses the vDSP library.


The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384, Spectrum Average: 4, 8).

## Audio / Spectrum Analyzer Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/64/a3/6b/64a36b2f-8ccc-a62c-761f-3122eca3e12e/bg_224_2064_U00d72752_en_01.png/2064x2752.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/24/5c/2c/245c2cbb-b2fd-d8d9-d0dd-71cdb785f7f5/bg_224_2064_U00d72752_en_02.png/2064x2752.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/32/78/59/32785950-9479-de9a-5c1f-504a42ac49a0/bg_224_2064_U00d72752_en_03.png/2064x2752.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/de/c8/d9/dec8d91f-8a91-d22a-1012-79d66f2cbc1a/bg_224_2064_U00d72752_en_04.png/2064x2752.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2d/44/35/2d4435b3-fb5b-abee-12ad-28460a0718a1/bg_224_2064_U00d72752_en_05.png/2064x2752.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b7/71/b1/b771b1db-6099-d4d7-98a7-f7e2684a154e/bg_224_2064_U00d72752_en_06.png/2064x2752.png)

## Audio / Spectrum Analyzer Rating Breakdown in Taiwan
- 5 stars: 61 (92%)
- 4 stars: 4 (6%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 1 (2%)


## Audio / Spectrum Analyzer In-App Purchases
| Item | Price |
|------|-------|
| Always remove banner ads. | $90.00 |

## Audio / Spectrum Analyzer Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Portugal | Music | #1 |
| Top Paid | Malaysia | Music | #3 |
| Top Paid | Hong Kong SAR China | Music | #9 |
| Top Paid | South Korea | Music | #9 |
| Top Paid | Portugal | Overall | #10 |
| Top Paid | Vietnam | Music | #11 |
| Top Paid | Japan | Music | #11 |
| Top Paid | Taiwan | Music | #14 |
| Top Paid | Italy | Music | #30 |
| Top Paid | Netherlands | Music | #31 |
| Top Paid | India | Music | #40 |
| Top Grossing | Portugal | Music | #48 |
| Top Paid | Malaysia | Overall | #49 |
| Top Grossing | Malaysia | Music | #54 |
| Top Paid | United States | Music | #57 |
| Top Paid | Switzerland | Music | #65 |
| Top Grossing | South Korea | Music | #74 |
| Top Paid | South Korea | Overall | #79 |
| Top Paid | United Kingdom | Music | #95 |
| Top Paid | Japan | Overall | #107 |
| Top Paid | Vietnam | Overall | #112 |
| Top Paid | Hong Kong SAR China | Overall | #145 |
| Top Paid | Taiwan | Overall | #190 |
| Top Paid | Italy | Overall | #250 |
| Top Paid | Netherlands | Overall | #307 |
| Top Paid | India | Overall | #365 |


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## Audio / Spectrum Analyzer Available In
- [Japan](https://apptail.io/app/app-DmO/japan)
- [United States](https://apptail.io/app/app-DmO/united-states)
- [Vietnam](https://apptail.io/app/app-DmO/vietnam)
- [China](https://apptail.io/app/app-DmO/china)
- [Germany](https://apptail.io/app/app-DmO/germany)
- [Brazil](https://apptail.io/app/app-DmO/brazil)
- [Italy](https://apptail.io/app/app-DmO/italy)
- [United Kingdom](https://apptail.io/app/app-DmO/united-kingdom)
- [Mexico](https://apptail.io/app/app-DmO/mexico)
- [Canada](https://apptail.io/app/app-DmO/canada)
- [France](https://apptail.io/app/app-DmO/france)
- [South Korea](https://apptail.io/app/app-DmO/south-korea)
- [Russia](https://apptail.io/app/app-DmO/russia)
- [Thailand](https://apptail.io/app/app-DmO/thailand)
- [Taiwan](https://apptail.io/app/app-DmO/taiwan)
- [Spain](https://apptail.io/app/app-DmO/spain)
- [Australia](https://apptail.io/app/app-DmO/australia)
- [Netherlands](https://apptail.io/app/app-DmO/netherlands)
- [India](https://apptail.io/app/app-DmO/india)
- [Poland](https://apptail.io/app/app-DmO/poland)
- [Hungary](https://apptail.io/app/app-DmO/hungary)
- [Indonesia](https://apptail.io/app/app-DmO/indonesia)
- [Austria](https://apptail.io/app/app-DmO/austria)
- [Belgium](https://apptail.io/app/app-DmO/belgium)
- [Czechia](https://apptail.io/app/app-DmO/czechia)
- [Romania](https://apptail.io/app/app-DmO/romania)
- [Argentina](https://apptail.io/app/app-DmO/argentina)
- [Switzerland](https://apptail.io/app/app-DmO/switzerland)
- [Chile](https://apptail.io/app/app-DmO/chile)
- [Ukraine](https://apptail.io/app/app-DmO/ukraine)
- [Colombia](https://apptail.io/app/app-DmO/colombia)
- [Hong Kong SAR China](https://apptail.io/app/app-DmO/hong-kong)
- [Sweden](https://apptail.io/app/app-DmO/sweden)
- [Türkiye](https://apptail.io/app/app-DmO/turkey)
- [Philippines](https://apptail.io/app/app-DmO/philippines)
- [Singapore](https://apptail.io/app/app-DmO/singapore)
- [Portugal](https://apptail.io/app/app-DmO/portugal)
- [Greece](https://apptail.io/app/app-DmO/greece)
- [Israel](https://apptail.io/app/app-DmO/israel)
- [Slovakia](https://apptail.io/app/app-DmO/slovakia)
- [South Africa](https://apptail.io/app/app-DmO/south-africa)
- [Lithuania](https://apptail.io/app/app-DmO/lithuania)
- [Bulgaria](https://apptail.io/app/app-DmO/bulgaria)
- [Kazakhstan](https://apptail.io/app/app-DmO/kazakhstan)
- [Malaysia](https://apptail.io/app/app-DmO/malaysia)
- [Denmark](https://apptail.io/app/app-DmO/denmark)
- [United Arab Emirates](https://apptail.io/app/app-DmO/united-arab-emirates)
- [Dominican Republic](https://apptail.io/app/app-DmO/dominican-republic)
- [New Zealand](https://apptail.io/app/app-DmO/new-zealand)
- [Peru](https://apptail.io/app/app-DmO/peru)
- [Slovenia](https://apptail.io/app/app-DmO/slovenia)
- [Norway](https://apptail.io/app/app-DmO/norway)
- [Croatia](https://apptail.io/app/app-DmO/croatia)
- [Ecuador](https://apptail.io/app/app-DmO/ecuador)
- [Belarus](https://apptail.io/app/app-DmO/belarus)
- [Malta](https://apptail.io/app/app-DmO/malta)
- [Ireland](https://apptail.io/app/app-DmO/ireland)
- [Uzbekistan](https://apptail.io/app/app-DmO/uzbekistan)
- [Latvia](https://apptail.io/app/app-DmO/latvia)
- [Panama](https://apptail.io/app/app-DmO/panama)
- [Sri Lanka](https://apptail.io/app/app-DmO/sri-lanka)
- [Kenya](https://apptail.io/app/app-DmO/kenya)
- [Lebanon](https://apptail.io/app/app-DmO/lebanon)
- [Ghana](https://apptail.io/app/app-DmO/ghana)
- [Uganda](https://apptail.io/app/app-DmO/uganda)
- [Madagascar](https://apptail.io/app/app-DmO/madagascar)
- [Finland](https://apptail.io/app/app-DmO/finland)
- [Estonia](https://apptail.io/app/app-DmO/estonia)
- [Saudi Arabia](https://apptail.io/app/app-DmO/saudi-arabia)
- [Azerbaijan](https://apptail.io/app/app-DmO/azerbaijan)
- [Uruguay](https://apptail.io/app/app-DmO/uruguay)
- [Luxembourg](https://apptail.io/app/app-DmO/luxembourg)
- [Angola](https://apptail.io/app/app-DmO/angola)
- [Iceland](https://apptail.io/app/app-DmO/iceland)
- [Bahrain](https://apptail.io/app/app-DmO/bahrain)
- [Armenia](https://apptail.io/app/app-DmO/armenia)
- [Nigeria](https://apptail.io/app/app-DmO/nigeria)
- [Jamaica](https://apptail.io/app/app-DmO/jamaica)
- [Cyprus](https://apptail.io/app/app-DmO/cyprus)
- [North Macedonia](https://apptail.io/app/app-DmO/north-macedonia)
- [Tunisia](https://apptail.io/app/app-DmO/tunisia)
- [Brunei](https://apptail.io/app/app-DmO/brunei)
- [Nepal](https://apptail.io/app/app-DmO/nepal)
- [Barbados](https://apptail.io/app/app-DmO/barbados)
- [Paraguay](https://apptail.io/app/app-DmO/paraguay)
- [Egypt](https://apptail.io/app/app-DmO/egypt)
- [Kuwait](https://apptail.io/app/app-DmO/kuwait)
- [Cayman Islands](https://apptail.io/app/app-DmO/cayman-islands)
- [Pakistan](https://apptail.io/app/app-DmO/pakistan)
- [Algeria](https://apptail.io/app/app-DmO/algeria)

---

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